am ec0ff012: am f4efa044: Update hello-gl2 sample to properly implement EGL Config selection.

Merge commit 'ec0ff0125cb33cbae29be268035c461b5a2355ce'

* commit 'ec0ff0125cb33cbae29be268035c461b5a2355ce':
  Update hello-gl2 sample to properly implement EGL Config selection.