Revert "Don't dither RGB 565 frames"

This reverts commit ee16b672.

hwc-dont-dither-rgb565.patch

-diff --git a/libhwcomposer/a-family/hwcomposer.cpp b/libhwcomposer/a-family/hwcomposer.cpp
-index 6072f9d..50d1e55 100644
---- a/libhwcomposer/a-family/hwcomposer.cpp
-+++ b/libhwcomposer/a-family/hwcomposer.cpp
-@@ -1700,8 +1700,7 @@ static int drawLayerUsingCopybit(hwc_composer_device_t *dev, hwc_layer_t *layer,
-     copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 255);
-     copybit->set_parameter(copybit, COPYBIT_PREMULTIPLIED_ALPHA,
-                            (layer->blending == HWC_BLENDING_PREMULT)? COPYBIT_ENABLE : COPYBIT_DISABLE);
--    copybit->set_parameter(copybit, COPYBIT_DITHER,
--                            (dst.format == HAL_PIXEL_FORMAT_RGB_565)? COPYBIT_ENABLE : COPYBIT_DISABLE);
-+    copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
-     err = copybit->stretch(copybit, &dst, &src, &dstRect, &srcRect, &copybitRegion);
- 
-     if(tmpHnd)