[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)

Conflicts:
	src/com/android/settings/WirelessSettings.java

(cherry picked from commit 2924fdb1218923f60f8184affe84cba960303377)

Conflicts:
	src/com/android/settings/WirelessSettings.java

(cherry picked from commit 39b39167fe4d3b739d06b07c730cd5cf399ec736)
(cherry picked from commit 846145158970ddef156e52348b1dc927249210b6)