Add getPhoneNumber/setPhoneNumber API

Bug: 193539271
Test: make
Change-Id: Iac651f2ca4269f20a2c7e87c7b6edf1d6c992867
Merged-In: Iac651f2ca4269f20a2c7e87c7b6edf1d6c992867
(cherry picked from commit 0594b4f4906ddc711c48e86c4fa604398f11cd0a)
3 files changed