drm/amdgpu: Use less generic enum definitions

Status from this message: Applied. thanks!

Get series with b4

b4 am [email protected]

Versions newest first

#	Subject and files	Size	Replies	Applied
1/1	drm/amdgpu: Use less generic enum definitions`drivers/gpu/drm/amd/amdgpu/amdgpu.h` `drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c` `drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c`	+22 ~~-22~~	1 reply

No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.