Revert "msm_fb: hdmi: Do not turn on HDMI if not ready"

This reverts commit 03d135dd1f3f9ccdcafb31396899a1ac74efb2d4.
Revert "msm: msm_fb: remove mmio access through mmap"

This reverts commit f47a6c909a014c227e323f6c1380b97026f00641.