hqd: Add support for 565 macro tile format

Extend macro tile feature support to rgb565 format.

Change-Id: I3d696d1ec66bfd95fcf3d243a1d669cb074da77f
diff --git a/libgralloc/alloc_controller.cpp b/libgralloc/alloc_controller.cpp
index 723267b..88b9b00 100644
--- a/libgralloc/alloc_controller.cpp
+++ b/libgralloc/alloc_controller.cpp
@@ -393,6 +393,7 @@
             case  HAL_PIXEL_FORMAT_RGBA_8888:
             case  HAL_PIXEL_FORMAT_RGBX_8888:
             case  HAL_PIXEL_FORMAT_BGRA_8888:
+            case  HAL_PIXEL_FORMAT_RGB_565:
                 {
                     tileEnabled = true;
                     // check the usage flags