msm_fb: Remove power on at pan.

This should not be needed on MDDI panels.

Change-Id: I9021f94e1bb3fad7e17920152aa520748a518c06
msm: mddi_novatek_fwvga: Simplify panel power on/off.

Remove all "half off/on" states.

Change-Id: I19ba25b325956ede4e1e13ee3cf214faf56c4007