Ims: Enable IMS feature in multi-sim

1. Add Phone ID check before creating IMS phone
2. Revert the codechanges of MSIM blocking IMS calls

Change-Id: Idd9eb20a9f9084d05d71328a89d3a3998d9be418
CRs-Fixed: 699956

Conflicts:
	src/java/com/android/internal/telephony/cdma/CDMAPhone.java
	src/java/com/android/internal/telephony/gsm/GSMPhone.java