Surfaceflinger: Add Src orientation for the layer

hwcl->transform contains the final transform, add source transform
to it, so that the source transform can be used for setting correct
orientation for Secondary display.

Change-Id: I9dd6ab9495991b01211711f55b9380a3a53cf0f0
CRs-fixed: 341691, 330719, 342199, 344308
(cherry picked from commit ec2226ef4e8c9bbf5d255d26f9677d7e36fc6ea2)