cdma: Restore SVDO after merge.

Allow evdo/ehrpd + voice simutaneously.
Use ro.ril.svdo=true

Change-Id: If7be25edc10f21680adbe3a059370d77a82ef076
Add SMS Middleware layer.

Change-Id: If5621d0c5126d6917ab00143af645692f3c4a384
Merge remote-tracking branch 'Slim/kk4.4' into slim4.4