surfaceflinger: Unbreak the ABI

 * Adreno is calling eglSwapPreserved, don't break the ABI.

Change-Id: Iaf300e2530534602910b9593b1c9136ed75559b5
Merge branch 'cm-12.0' of git://github.com/CyanogenMod/android_frameworks_native into cm-12.0