target: msm8916: add necessary delay before backlight on
target: msm8916: add necessary delay before backlight on

otm8019A video mode panel needs delay between TG and backlight
on, to make sure screen content is updated to IC correctly.
This helps to address some unexpected artifacts during power on.

CRs-fixed: 662657
Change-Id: I487c3b961c1412f8c3ce9d8a171cd08fa6d1bc58

M1cha/lktris,Foxda-Tech/polaris-bootable-bootloader-lk,CanarySolutions/little-kernel,Foxda-Tech/polaris-bootable-bootloader-lk,efidroid/lk,M1cha/lktris,CanarySolutions/little-kernel,efidroid/lk,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/lktris,CanarySolutions/little-kernel,efidroid/lk,M1cha/android_bootable_bootloader_lk,M1cha/android_bootable_bootloader_lk,CanarySolutions/little-kernel,M1cha/lktris,efidroid/lk,M1cha/android_bootable_bootloader_lk,efidroid/lk,M1cha/lktris,CanarySolutions/little-kernel,Foxda-Tech/polaris-bootable-bootloader-lk,M1cha/android_bootable_bootloader_lk,Foxda-Tech/polaris-bootable-bootloader-lk