drm/amdgpu: update mes process/gang/queue definitions

Update the definitions of MES process/gang/queue.

v2: add missing includes
v3: rebase fix, include mm.h

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>