drm/radeon/kms: add support for square microtiles on r3xx-r5xx

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h
index 39537f3..81e614b 100644
--- a/include/drm/radeon_drm.h
+++ b/include/drm/radeon_drm.h
@@ -808,6 +808,7 @@
 #define RADEON_TILING_SWAP_32BIT  0x8
 #define RADEON_TILING_SURFACE     0x10 /* this object requires a surface
 					* when mapped - i.e. front buffer */
+#define RADEON_TILING_MICRO_SQUARE 0x20
 
 struct drm_radeon_gem_set_tiling {
 	uint32_t	handle;