Cleanup build

No functional changes here, just a few housekeeping things:

1) Renamed it to "build.yml" and "Buildroot" since it's responsibilities have now expanded.

2) Got rid of all the caching stuff since we're not using it any more.

3) Updated the upload-artifact action to v3 to resolve the warnings Github was logging about v2 using a deprecated node.js version

.github/workflows/build.yml

@@ -1,5 +1,4 @@
-name: Build Root Filesystem
-
+name: Buildroot
 on:
   push:
   pull_request:
@@ -20,30 +19,7 @@ jobs:
     - if: inputs.submodule
       run: git submodule update --init --depth 1 -- ${{ inputs.submodule }}
         
-    - name: Generate cache key
-      if: inputs.submodule
-      id: cache-key
-      run: |
-        cd ${{ inputs.submodule }}
-        echo "::set-output name=key::${{ inputs.submodule }}-$(git rev-parse --short HEAD)"
-      
-    - uses: actions/cache@v3
-      if: inputs.submodule
-      with:
-        path: ${{ inputs.submodule || '.' }}/output/images/miyoo-cfw-*.img
-        key: ${{ steps.cache-key.outputs.key }}
-      id: cache
-
-    - name: retrieve ccache
-      uses: actions/cache@v3
-      with:
-        path: ~/.buildroot-ccache
-        key: ${{ inputs.submodule }}-uclibc-ccache-${{ github.sha }}
-        restore-keys: |
-          ${{ inputs.submodule }}-uclibc-ccache-
-        
     - name: build
-      #if: steps.cache.outputs.cache-hit != 'true'
       run: |
         cd ${{ inputs.submodule || '.' }}
         #apt update && apt install -y wget unzip build-essential git bc swig libncurses-dev libpython3-dev libssl-dev cpio rsync subversion
@@ -56,25 +32,25 @@ jobs:
         sudo apt update && sudo apt install -y python3-matplotlib python3-numpy
         make graph-build
       
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: build image (uClibc)
         path: ${{ inputs.submodule || '.' }}/output/images/miyoo-cfw-*.img
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn`
         
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: SDK (uClibc)
         path: ${{ inputs.submodule || '.' }}/output/images/arm-miyoo-linux-uclibcgnueabi_sdk-buildroot.tar.gz
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn`    
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: build-graphs (uClibc)
         path: ${{ inputs.submodule || '.' }}/output/graphs/
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn` 
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: rootfs (uClibc)
         path: ${{ inputs.submodule || '.' }}/output/images/rootfs.ext4
@@ -89,30 +65,7 @@ jobs:
     - if: inputs.submodule
       run: git submodule update --init --depth 1 -- ${{ inputs.submodule }}
     
-    - name: Generate cache key
-      if: inputs.submodule
-      id: cache-key
-      run: |
-        cd ${{ inputs.submodule }}
-        echo "::set-output name=key::${{ inputs.submodule }}-$(git rev-parse --short HEAD)"
-      
-    - uses: actions/cache@v3
-      if: inputs.submodule
-      with:
-        path: ${{ inputs.submodule || '.' }}/output/images/miyoo-cfw-*.img
-        key: ${{ steps.cache-key.outputs.key }}
-      id: cache
-
-    - name: retrieve ccache
-      uses: actions/cache@v3
-      with:
-        path: ~/.buildroot-ccache
-        key: ${{ inputs.submodule }}-musl-ccache-${{ github.sha }}
-        restore-keys: |
-          ${{ inputs.submodule }}-musl-ccache-
-
     - name: build
-      #if: steps.cache.outputs.cache-hit != 'true'
       run: |
         cd ${{ inputs.submodule || '.' }}
         #apt update && apt install -y wget unzip build-essential git bc swig libncurses-dev libpython3-dev libssl-dev cpio rsync subversion
@@ -125,25 +78,25 @@ jobs:
         sudo apt update && sudo apt install -y python3-matplotlib python3-numpy
         make graph-build
       
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: build image (musl)
         path: ${{ inputs.submodule || '.' }}/output/images/miyoo-cfw-*.img
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn`
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: SDK (musl)
         path: ${{ inputs.submodule || '.' }}/output/images/arm-miyoo-linux-musleabi_sdk-buildroot.tar.gz
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn` 
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: build-graphs (musl)
         path: ${{ inputs.submodule || '.' }}/output/graphs/
         if-no-files-found: error # 'error', 'warn', 'ignore'; defaults to `warn` 
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: rootfs (musl)
         path: ${{ inputs.submodule || '.' }}/output/images/rootfs.ext4