drm/amdgpu: add new ip block for GMC 11.0

Add ip block support for gmc v11_0_3.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>