Add APIs to get/set if usage of multiple SIMs is restricted.

Add API that indicates if the usage of multiple SIMs at the same time is
allowed or restricted in order to support requirements from carriers for
dual SIM devices

Bug: 123537730
Test: Verified with test application.
Change-Id: I5e3e5ff41927e43ead4a30988630cf9125d5a048
Merged-In: I5e3e5ff41927e43ead4a30988630cf9125d5a048
(cherry picked from commit 398d5d91)