Could not enable data connection

Could not enable the default type APN in below case:
1. Default apn exists, connect wifi
2. Delete default apn
3. Disconnect wifi

enableApnType won't reactivate default apn type when no
default apn exists. Add default apn criterium to avoid this.

Change-Id: Ic8699669e576e5d2140852f359e34ed6c3275633
telephony: do only run setCellInfoListRate for RIL version >= 8
old libraries like those from MR0 don't support this and sending this command causes endless wakelocks

Change-Id: Ia47d366f70841eb9910079e105add407f58e7555
SamsungQualcommRIL: fix my derp.

* don't code when you are tired
Change-Id: Ic02bd9cbbe96b674d7c93a2c5807563ddf46199a