p#1: Remove WAIT and CHANNEL enums and usage. Replace BypassPipe with
GenericPipe. Client expected to set alignments and parameters.
Add transform combination enums.
p#2: Allow APIs to be called in any order. Do transform calcs in commit.
Move ext type setter and getter functions.
p#3: Add calculations for 180 transform.
p#4: Add secure session support in rotator
p#5: Implement all rotations in terms of H flip, V flip and 90 rotation.
Change-Id: I34a9a2a0f1255b3467a0abbaa254d0b584e901ce
