Add ThermalMitigation API to Telephony.

go/telephony-thermal-mitigation

Test: make, cts
Bug: 158872959

Change-Id: Ib4be5edf063e4c54e9238b0403f59e1621df671e
Merged-In: Ib4be5edf063e4c54e9238b0403f59e1621df671e
9 files changed