apn: fix some data issues when using sprint operator numerics.

this fixes issues like
https://jira.cyanogenmod.org/browse/NIGHTLIES-404

requires:
http://review.cyanogenmod.org/#/c/79764/

Change-Id: I595788c3bf529640df16aaa75551bb55b4c0f036
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_vendor_cm into cm-12.0