TeleService: Support call waiting on CDMA phone

There is no call waiting function on CDMA phone.

Support call waiting on CDMA phone.

CRs-Fixed: 694575

Change-Id: Ie51b0981eeca02bb3561c92a4a57f026ca927908
Revert "TeleService : Fix the network mode wrong issue for ssss"

This reverts commit 3956bbd0b2e95e0a15ac26fd3a0eab3378c09f9c.

Change-Id: I9afc8502170a064ea3abff77807968c1ff0265b3
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_services_Telephony into android-4.4