Don't use fence sync for qcom legacy

Change-Id: Ice64233a25edee763a36a3ba34230d1360a0d610
Revert "Revert "libgui: Use fences for all QCOM targets""

This reverts commit bb3ca04533c09b7666570bd2e43c5d1339c18e16.
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_frameworks_native into jb-mv