Upstream Merge:
https://github.com/CyanogenMod/lge-kernel-iproj/commit/eb7abefdc933145eb356f890987332c4dec1558c
This change supports client to get the current
performance level of the video driver via
IOCTL_GET_PERF_LEVEL. The current performance
level indicate the number of MBs per second
is being processed by video hardware.

Change-Id: Id7523612a5e98eb7dc6f5a15862753b1d1bed019
Upstream Merge:
https://github.com/CyanogenMod/lge-kernel-iproj/commit/9d46364f391df2d2f8beeeff61a31708d49dceec
 msm_fb: Set timeline threshold for command mode to 2

For command mode panel, timeline threshold is 1 and we return
commit ioctl on DMA_P interrupt. This causes fps to drop
since sometimes overlay is kickoff just after vsync interrupt
causing DMA_P wait time more than 1 vsync period. Hence, increase
timeline to 2 and return commit ioctl on vsync interrupt.

Change-Id: Ic6d7dbba32865b4d8451bfe30afcb46d415a2981
Upstream sync:
https://github.com/CyanogenMod/lge-kernel-iproj/commit/8726a03557c511183ee6698b4f024c682e89f79a
 msm: mdp: Update sync pt. behaviour

Add a retire fence and clean up the existing release fence
implementation

Change-Id: Ia9d073cbb6dc3bc53d0ba9b0a6f5bb274a18b0dd
fix spell mistake

Change-Id: I240ae47b495156d7df972ed4c45260e44d69b714