- sourceTransform in the hwc_layer_t has the source buffer transform,
use this transform for external display.
- This helps in showing videos with source orientation properly on the
external display
CRs-fixed: 387357
Change-Id: I2ac7e5481a27b93d10ba3fc1ad2e4a8788dc20a5
(cherry picked from commit a51a41188d34db49528edadadbf9ddbc052e772d)