[Telephony Mainline] Use the new SystemApi for mainline

Bug: 144478274
Test: make
Change-Id: I644ea6f9ac0e2c7e3222a07a6eff59d6b38831a2
Merged-In: I644ea6f9ac0e2c7e3222a07a6eff59d6b38831a2
2 files changed