msm_fb: Add support for shared GPIO on SKU3/SKU3-1/SKU7

Use virtual regulator support for shared GPIOs between display
and camera on SKU3, SKU3-1 and SKU7 variants.

CRs-fixed: 384271
Change-Id: If40401ca68299e974bce9daab599bcf5839ff662
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
10 files changed