[Camera Revamp] Revert "Unify the YUV_420_888 as NV21 in emulator HALs."

This reverts commit 036f181223367d65437c64812084626a9f78bc51.

Bug: 142486323

Test: Manual

Change-Id: I72c29702c5966b762c4a467bf1a6c3514022f926
6 files changed