msm: mdss: enable secure wfd support

Provide APIs to enable secure content display through wifi display.
Implement workaround to allocate a secure source pipe so that MDP is
allowed to write back to secure buffer.

Change-Id: I1c329fec726bec1ae721bc5f2ec39d3b21259e8d
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>
Signed-off-by: Deva Ramasubramanian <dramasub@codeaurora.org>
6 files changed