target: msm8974: edp back light through lpg channel 8

Currently edp back light is controlled by pulling high at
pm-gpio-36 directly. This cause back light inverted at
Android kernel. Fixed back light inverted problem by
control back light through lpg channel #8.

CRs-Fixed: 538278
Change-Id: Ia63bdc1e94ac4600252f215b039cf2227c9c08f9
1 file changed