drm/amdgpu/powerplay/smu7: enable AVFS control via ppfeaturemask

Allow the user to disable AFVS via ppfeaturemask for debugging.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/smumgr/smu7_smumgr.c

@@ -620,7 +620,8 @@ int smu7_init(struct pp_hwmgr *hwmgr)
 		return -EINVAL;
 	}
 
-	if (smum_is_hw_avfs_present(hwmgr))
+	if (smum_is_hw_avfs_present(hwmgr) &&
+	    (hwmgr->feature_mask & PP_AVFS_MASK))
 		hwmgr->avfs_supported = true;
 
 	return 0;