Add ability to load btrfs, sound and usb drivers as a module (#176)

* Add ability to load btrfs and usb drivers as a module
* Add load sound driver
* firstboot: correct btrfs loading only on fs change

---------

Co-authored-by: Apaczer <94932128+Apaczer@users.noreply.github.com>

board/miyoo/main/apps/usb-host/usb-host.sh

@@ -1,3 +1,16 @@
 #!/bin/busybox sh
 echo host  > /sys/devices/platform/soc/1c13000.usb/musb-hdrc.1.auto/mode
 sleep 2
+
+modprobe evdev
+modprobe joydev
+modprobe analog
+modprobe xpad
+modprobe atkbd
+modprobe uinput
+modprobe psmouse
+modprobe synaptics_usb
+modprobe mousedev
+modprobe usbhid
+modprobe hid-generic
+modprobe hid