[automerger skipped] Make CellIdentity#getPlmn() Publicly Accessible am: e69e5b0c9c am: c0c8558a87 -s ours am: a4e5b7ccb8 -s ours

am skip reason: Change-Id I5a79e5339a7e4e1351582f199559801069df0c76 with SHA-1 741d281c60 is in history

Change-Id: I5e486c8ba72f9361234f4815dc15967d75dbb5eb