[platform/msm7630]: Enable MDDI display in android bootloader.

--Initialize MDDI host and client
  to enable display. Enable PMDH and PMDH_P clock using proc comm.
--Add code to configure voltage regulators using SSBI writes.

By default, Display in bootloader is disabled on this target.

This code doesn't have support for Local clock control. To further
optimize the code, PMDH and PMDH_P clock should be enabled in the
modem bootloader code instead of enabling them in application
bootloader.

Change-Id: Ie10f8b096addf9f62e65526f8ffad80e64c5db93
10 files changed