drm/amdgpu/psp: Add support VMR ring for VF

PSP only support VMR ring for SRIOV vf since v45 and all commands will
be send to VMR ring for executing.

VMR ring use C2PMSG 101 ~ 103 instead of C2PMSG 64 ~ 71.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>