Merge "Update docs that pdu session id default is 0" am: b3b0b11de3 am: 9601a7ff2f

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1550320

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6e3ad8d238bde88731b81bd6c95bef5026c388b1