GL internal format for AHardwareBuffer backed egl image.

For egl image created using AHardwareBuffer, get he internal format
using the buffer format instead of hardcoding it to GL_RGBA.

Bug: 891060
Change-Id: I1805ad432457c36dde4726aa89d61ceaa8e47d4d
Reviewed-on: https://chromium-review.googlesource.com/c/1380820
Reviewed-by: Jonathan Backer <backer@chromium.org>
Commit-Queue: vikas soni <vikassoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617483}
2 files changed