[RESTRICT AUTOMERGE] CameraServiceProxy: More granularity to NFC / Camera interaction

Instead of disabling NFC active polling on all camera use, or never
disabling NFC active polling, support disabling based on camera facing.

Test: 'adb shell dumpsys nfc' while trying all 4 possible NFC options and
   using front/back cameras via default camera and via face authentication.
Bug: 138851393

Change-Id: I81eb014f0c2058258384538dce7c01b575c44df4