Add OWNERS for MTP functionality am: b123928699 am: 14c8b4f3d3 am: 68fb7c2283 am: 218cb26cad am: ea171f5716 am: ef2ff857c6

Original change: https://android-review.googlesource.com/c/platform/packages/services/Mtp/+/2628009

Change-Id: Ib1fbe4a2570af5a960f27199e1b2d60a7e0d5f31
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>