[3/3] Settings: Add NFC polling setting

Change-Id: I1f715d9ab6b77cf4903e2bf5ef8310471c178309

Conflicts:
	res/values/custom_arrays.xml
	res/values/custom_strings.xml

(cherry picked from commit a9b458d8ece6496f80a94ae3adf4781298e51ae0)