GPU has been supported for a while in the mainline-ish kernel, so let
pmbootstrap show UIs like Phosh.
And msm-modem-uim-selection will setup the modem well enough so at least
the primary SIM should work out of the box.
[ci:skip-build] already built successfully in CI
This is needed with the 5.11 kernel. Also adjust the vram & cma sizes
for all msm8974 devices.
The CMA size is 256MB as set in the kernel config.
VRAM is default 16MB although it is set to 192MB with a kernel patch;
but set it manually for all devices to make it possible to remove this
patch in the future - until we have IOMMU working.
Prepare for better device categorization by moving everything to testing
subdir first.
[skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR
depends on this MR
Related: postmarketos#16
Luca Weiss