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

This reverts commit 5b7020899e4d654d9d0c9c72de6be2c3effea3f6.
Revert "media: implement wfd"

This reverts commit 7277c4ac4d0cea40a0b3620f5d4e0f635316d22d.
senny_defconfig: Disable panel writeback for now