Move Mms from phone specific to telephony

Tablets want MMS too (carriers send messages, etc), lets make this
for any device inherenting telephony.mk

Change-Id: Ida0e86d1f4d982580cef72816f93f88d0b0313e4
APN: add MetroPCS gsm info

Change-Id: I747215df31666de11cd3271f40024ef0b362609a
APN typo

Change-Id: I36def45794d4d73c5439cf62cecfa1ecf7bdeea2
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0