Changed regex matching for MCC and MNC

Bug: 137942727
Test: atest CellIdentityTest
Change-Id: Iaeb9ff9e2a5a82be66855378831cd52ee49e3c5c
(cherry picked from commit cb76b14fdfbb8e074bc3d319ae7d8d29e47ec1fc)
Merged-In: Iaeb9ff9e2a5a82be66855378831cd52ee49e3c5c
1 file changed