s4-common: move radio files from common to device-common

* Radio proprietary files appear to be specific to CDMA/GSM,
  so allow each device to supply it's own set.

Change-Id: Id2368b9f9005555b3c44a48b1c1dfb4d25f82ec4
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1