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. :)
File system modules are included by default in postmarketos-mkinitfs
and loaded dynamically when needed.
[ci:skip-build]: already built successfully in CI
[ci:ignore-count]
[ci:skip-vercheck] needed for the postmarketos-ui-* packages in this
series
[ci:skip-build] already built ui-* packages in CI, and device pacakges
are just trivial deviceinfo change (manually built some just to verify)
Actually the display in asus-me176c has a width of 800px, which means
that the splash screen isn't perfectly centered. Correct this in
deviceinfo to make it show up correctly.
Also, add configuration file for Phosh to reduce scaling a bit to 1.75.
It's kind of subjective but scaling = 2 definitely feels too large.
[ci:skip-build]: already built successfully in CI
