add slotIndex to cellbroadcastProvider

Bug: 135956699
Bug: 141962867
Test: Build
Change-Id: I5d8706f8f4a6465c7903b1f34e42f96f4e2a8021
(cherry picked from commit 859f398cb86b06c1df16ec245deac0ee893bceaa)
Merged-in: I5d8706f8f4a6465c7903b1f34e42f96f4e2a8021
1 file changed