Add ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION to identify whether
driver need to reserve VRAM for SR-IOV shared memory.
Signed-off-by: NHorace Chen <horace.chen@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>