gralloc: Return aligned w,h for UPDATE_BUFFER_GEOMETRY

Return aligned width and height in case meta operation is
UPDATE_BUFFER_GEOMETRY.

CRs-Fixed: 880373
Change-Id: I3b263518d509f4de68c93692eace3cb0b2c69808
diff --git a/libgralloc/gr.h b/libgralloc/gr.h
index e27203a..6d7f4a7 100644
--- a/libgralloc/gr.h
+++ b/libgralloc/gr.h
@@ -120,6 +120,14 @@
                             int usage, int& aligned_w, int& aligned_h);
 
     /*
+     * Function to compute aligned width and aligned height based on
+     * private handle
+     *
+     * @return aligned width, aligned height
+     */
+    void getAlignedWidthAndHeight(const private_handle_t *hnd, int& aligned_w, int& aligned_h);
+
+    /*
      * Function to compute the adreno aligned width and aligned height
      * based on the width and format.
      *