SamsungQualcommRIL: support exynos RIL radio states.

* required for m3
* enable it with v3 feature:  exynos4RadioState
* remove m3 class
Change-Id: Id34320c59a316e2b6747bd3a48077b863ab772d6
Merge pull request #17 from CyanogenMod/cm-10.1

SamsungQualcommRIL: support exynos RIL radio states.