Make the package consistent with firmware-qcom-adreno packaged from
linux-firmware, but keep them separate for legal reasons. The firmware
packaged in firmware-qcom-adreno-extra does not have a proper license.
[ci:ignore-count]
[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.
