drm/radeon: add support for newer mc ucode on CI (v2)

Fixes mclk stability on certain asics.

v2: print out mc firmware version used and size

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75992



Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org