Skia: Fix path to OpenGL Headers

The path that Skia was pointing to for the OpenGL Headers
was moved to frameworks/native. This patch will also be
submitted to the mainline for Google.

Change-Id: I75d2ce267d5ec202bb2e5e995f25f9ddfba0dc57
Neon optimized implementation of S16_opaque_D32_nofilter_DX

This patch does the following:
* Neon ASM blitter from RGB565 to ABGR8888 without blend.
* Special case for no scaling but the scaling case is almost as fast.

 Copyright (C) ST-Ericsson SA 2010

Change-Id: I56b789e8ad36072625d498d0da27658831cfff6d