apns-conf: Add TalkTalk APN

Change-Id: Ib0ca582a5f81f5b0bc9b1f682908f6064f24fff5
Merge "apns-conf: Add TalkTalk APN" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_vendor_cm into cd-4.4