SamsungQualcommRIL: support exynos RIL radio states.

* required for m3
* enable it with v3 feature:  exynos4RadioState
* remove m3 class
Change-Id: Id34320c59a316e2b6747bd3a48077b863ab772d6
Merge remote-tracking branch 'cyanogen/cm-10.1' into cm-10.1