Fix clock AM/PM error.
Some countries time format is [ah:mm] or [a h:mm].
original commit:
https://github.com/AOKP/frameworks_base/commit/b9afec204d0e93572a2dfae4729df5bef26feb05

Change-Id: Ifefb1c0e772255be681898450e2b104f2c811fa8