Revert "msm_fb: display: disable pan display and memory access to fb1 and fb2"

This reverts commit 395b4acc454b325f67af906e59aada2c13577f82.
Revert "msm_fb: display: add mdp version info for later mdp h/w"

This reverts commit 40dd1145e2e542745fb1ae210dd7532a27473070.
Revert "video: msm_fb: Wait for dma to finish before terminating"

This reverts commit 0184a0964b890e44da3f5da07a2e9f4cc9cfd3c9.