Merge "Revert "add const qualifier to the pcm_mask variables and arguments"" am: b324437e6e

Original change: https://android-review.googlesource.com/c/platform/system/media/+/1519788

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I52edf9920cbb8eb7feb2b0e362ec660f3260ac33