video: msm: Add logical display id for post processing
video: msm: Add logical display id for post processing

Define logical id for display backend processing.
These ids are independent with hw implementation, could be used
for MDP4, MDP5 and future ASICs. Kernel driver implementation will
also be abstracted to the post processing user.

Change-Id: I0ce92120e2e008f9acbb934fef0ff7654f27b39b
Signed-off-by: Ken Zhang <f90f0f509d376d2c74c54f5d2ce2b72e9085adf0@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas