Revert "msm: mdp: Update sync pt. behaviour"

The respective display-caf commit is not present in omni (and won't be accepted)
Reverting this fixes display

This reverts commit d21204235cb954f2a80da29ba4d4bd011d7d0e98.
Merge pull request #3 from LegacyXperia/android-4.4

Revert "msm: mdp: Update sync pt. behaviour"