amdgpu/dm: constify plane type.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -361,7 +361,7 @@ struct amdgpu_mode_info {
 	int			num_dig; /* number of dig blocks */
 	int			disp_priority;
 	const struct amdgpu_display_funcs *funcs;
-	enum drm_plane_type *plane_type;
+	const enum drm_plane_type *plane_type;
 };
 
 #define AMDGPU_MAX_BL_LEVEL 0xFF

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -71,7 +71,7 @@
 #include "i2caux_interface.h"
 
 
-static enum drm_plane_type dm_plane_type_default[AMDGPU_MAX_PLANES] = {
+static const enum drm_plane_type dm_plane_type_default[AMDGPU_MAX_PLANES] = {
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_PRIMARY,
@@ -80,14 +80,14 @@ static enum drm_plane_type dm_plane_type_default[AMDGPU_MAX_PLANES] = {
 	DRM_PLANE_TYPE_PRIMARY,
 };
 
-static enum drm_plane_type dm_plane_type_carizzo[AMDGPU_MAX_PLANES] = {
+static const enum drm_plane_type dm_plane_type_carizzo[AMDGPU_MAX_PLANES] = {
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_OVERLAY,/* YUV Capable Underlay */
 };
 
-static enum drm_plane_type dm_plane_type_stoney[AMDGPU_MAX_PLANES] = {
+static const enum drm_plane_type dm_plane_type_stoney[AMDGPU_MAX_PLANES] = {
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_PRIMARY,
 	DRM_PLANE_TYPE_OVERLAY, /* YUV Capable Underlay */