sdm: Add support for rotator with DRM

Add support for using rotator with DRM driver

Change-Id: I7fda6cb5bda571c3cc80dcae53238800cc875c0b
CRs-fixed: 1114808
diff --git a/libgralloc/gr.h b/libgralloc/gr.h
index ae26df9..edeca3f 100644
--- a/libgralloc/gr.h
+++ b/libgralloc/gr.h
@@ -71,6 +71,13 @@
 // Function to check if the format is an RGB format
 bool isUncompressedRgbFormat(int format);
 
+#ifdef COMPILE_DRM
+int getPlaneStrideOffset(private_handle_t *hnd, uint32_t *stride,
+        uint32_t *offset, uint32_t *num_planes);
+
+void getDRMFormat(int hal_format, int flags, uint32_t *drm_format,
+        uint64_t *drm_format_modifier);
+#endif
 /*****************************************************************************/
 
 class Locker {