[3171580] Add transform field to native buffers. (DO NOT MERGE)

This field indicate how the content of the buffer
needs to be transformed.

Change-Id: Ide3e980a90599e931406135693231276626adbbb
diff --git a/include/ui/android_native_buffer.h b/include/ui/android_native_buffer.h
index 402843e..a472824 100644
--- a/include/ui/android_native_buffer.h
+++ b/include/ui/android_native_buffer.h
@@ -51,8 +51,12 @@
     int stride;
     int format;
     int usage;
-    
-    void* reserved[2];
+
+    /* transformation as defined in hardware.h */
+    uint8_t transform;
+
+    uint8_t reserved_bytes[3];
+    void* reserved[1];
 
     buffer_handle_t handle;