Expose LE advertiser address for easier PTS tests (2/6)

This patchset adds a hidden method getOwnAddress, that lets app with
BLUETOOTH_PRIVILEGED permission to lear their own addreess. This is done
exclusively for PTS tests.

Bug: 35147497
Test: manual
Change-Id: I8da0128c1dac2995e488f1e0c48aa7d5fd399b4c
3 files changed