cdma: Restore SVDO after merge.

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

Change-Id: If7be25edc10f21680adbe3a059370d77a82ef076
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_opt_telephony into kitkat