Merge "lvm wrapper: Set SourceFormat as per number of channels" am: 953c4bd52d

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1613061

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib1d821a873e8aa0a2251792842de9b57cd80d87e