Revert "add CONFIG to skip ATAG passed devtree blob"

This reverts commit cdddc194bbb7745a1bfaaf89596e36c0be2eeb39.
xt926 defconfig update

Change-Id: Iba36e6f6e31cbb36dc62aa58bfa1fdc0714fcac9
mmi-display: add backup panel info for when devtree info is missing

includes info for panel: mipi_mot_video_smd_hd_465

Change-Id: I56c0323d401856fbb8d92acdbf5816240df8e2a2