ARM: dts: msm: update truly fhd panel init sequence

Update truly FHD panel init sequence to fix corruption
issues. Also enable dfps feature for the video mode panel
on SDM660 target with the updated sequence.

Change-Id: Ife010a0fccefad802877fd50f222587be36d24aa
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>