Add getSlotsMapping to PhoneInterfaceManager

Bug: 123101769
Test: build
Merged-In: Iedd6f5c7f1d932b45dc6f3b6cfa76dad4e0c430a
Change-Id: Iedd6f5c7f1d932b45dc6f3b6cfa76dad4e0c430a
(cherry picked from commit 3889a576c6091e7f52ad197931136d7821cf727d)
1 file changed