Right now we have multiple variants of A3 that are only different in
secure-boot keys and as such different firmware blobs.
Use msm-firmware-loader to support all A3 variants with a single device
port. Because of that, drop lte suffix as there are 3g variants as well.
[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)
As of MR 2039, the kernel modules are now stripped (INSTALL_MOD_STRIP=1).
It turns out that this massively reduces their size so that including
the panel + touchscreen modules in the initfs still fits into the
partition. This allows the splash screen and osk-sdl to work correctly.
