Fix a typo in the GRALLOC_USAGE_HW_2D constant.

Change-Id: I3de500455715298765b2e27bc8c59e2ec6c7a34f
diff --git a/include/hardware/gralloc.h b/include/hardware/gralloc.h
index d50c895..bbb22cf 100644
--- a/include/hardware/gralloc.h
+++ b/include/hardware/gralloc.h
@@ -64,7 +64,7 @@
     /* buffer will be used as an OpenGL ES render target */
     GRALLOC_USAGE_HW_RENDER       = 0x00000200,
     /* buffer will be used by the 2D hardware blitter */
-    GRALLOC_USAGE_HW_2D           = 0x00000C00,
+    GRALLOC_USAGE_HW_2D           = 0x00000400,
     /* buffer will be used with the framebuffer device */
     GRALLOC_USAGE_HW_FB           = 0x00001000,
     /* mask for the software usage bit-mask */