Many classes within Settings have access to the subscription info, rather
than only having access to the subscription id. For these classes, it is
more convenient to have a helper method where the whole subscription
info can be passed in, rather than having to call the
getSubscriptionId() helper method in so many locations within the
telephony settings codebase.
Bug: 150370656
Bug: 148303118
Test: atest -c SubscriptionUtilTest
Change-Id: I181960933ab8610d5572b7a7d6671fab8c1dbd22
67c75ac102