drm/amdgpu: Skip the program of GRBM_CAM* in SRIOV

KMD should not the program these registers,
so skip them in the SRIOV environment.
Signed-off-by: NPeng Ju Zhou <PengJu.Zhou@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -7114,6 +7114,9 @@ static void gfx_v10_0_setup_grbm_cam_remapping(struct amdgpu_device *adev)
 {
 	uint32_t data;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	/* initialize cam_index to 0
 	 * index will auto-inc after each data writting */
 	WREG32_SOC15(GC, 0, mmGRBM_CAM_INDEX, 0);