Revert "msm_fb: display: update var in display commit"

This reverts commit 3b5b42aba0bca21ae6231f58892419daf029d35e.
Revert "msm: display: non-blocking for overlay update"

This reverts commit 9b4a90f45df285bf60b6a10ecc04207d713c1f72.
Merge branch 'android-msm-3.4-kk' of https://github.com/TeamHackLG/lge-kernel-lproj into android-msm-3.4-kk