drm/amd/amdgpu: fill in raven case in soc15 early init

Signed-off-by: NHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -587,6 +587,11 @@ static int soc15_common_early_init(void *handle)
 		adev->pg_flags = 0;
 		adev->external_rev_id = 0x1;
 		break;
+	case CHIP_RAVEN:
+		adev->cg_flags = 0;
+		adev->pg_flags = 0;
+		adev->external_rev_id = 0x1;
+		break;
 	default:
 		/* FIXME: not supported yet */
 		return -EINVAL;