Add a subId extra to the respond via SMS intent.

In order to support replying to a caller via the same SIM that the
incoming call came through, add an extra to the respond via SMS intent
with the subId.

Bug: 18275919
Change-Id: I48ea3246194cb957045f12fea92a473ac0edaa23

Conflicts:
	src/com/android/server/telecom/RespondViaSmsManager.java
2 files changed