Bug 1089486 - [NFC] Disable NFC toggle in settings during NFC HW change,  r=arthur.chen, r=gweng

https://bugzilla.mozilla.org/show_bug.cgi?id=1089486
Ok, so I assume that in case of failure situation (NFC HW change fails) I should revert nfc.enable setting so the checkbox will be checked/unchecked automatically. Is this correct?