platform: msm_shared: update MDP5 driver for msm8996
platform: msm_shared: update MDP5 driver for msm8996

* Make SCM call optional in MDP5 driver. It is not
required for msm8996 target.

* Fix VBIF register base address configuration

Change-Id: Ia1fea02fc8a125fd303484a643f9a6888d3ffbca

Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk