community/device-asus-me176c: switch to linux-edge
Linux 5.18 brought better support for some x86-based Android tablets, thanks to work from Hans de Goede. This includes asus-me176c: the modified ACPI table and the Linux fork is no longer necessary, it can just run linux-edge from Alpine.
Drop the old Linux 5.4 fork and related packages. Instead of using the proprietary sound firmware from linux-firmware-intel, switch to using the open-source(!) "Sound Open Firmware" (SOF).
NOTE: The mainline battery driver seems quite a bit less accurate than the ugly old driver ported from the downstream driver. Also, Bluetooth seems to fail on some boots now. Overall it works quite well though. :)
Fixes #1499 (closed) (the mount-matrix is now contained in the kernel)
TODO:
Edited by Minecrell