Handle CALL_IS_WAITING MO notification.

Make that piece of information available to InCallUI so that it can
display it.

Change-Id: Id429824d3af85cf16290b8286b87903c9dc02655
Port enabled network mode selection menu to MSIM classes

* MSIM mobile network settings menu will not display network mode
  selection unless world phone is selected. Make it available for GSM
  only as well.

Change-Id: I1bafc6049a7152382af601312361619f2e6256cd
Clean up MSimMobileNetworkSubSettings

* Reduce code duplication from MobileNetworkSettings class from where
  this is originally derived.

Change-Id: Icc31d313351dac53fb4597ec31ec1f121425b3a7
Pass creation time in Call interface so that we can uniquely identify calls in call log

Change-Id: Id235a1fa3b639ad684b4f69d676e55925886d905
Add back/home action to Subscription Settings Action Bar (MultiSIM)

Change-Id: Ia290b861250fb5477908d3420e7ad290499f2c4c