MAINTAINERS: Add NFC specific mailing list

linux-nfc@lists.01.org is where all the Linux NFC related discussions take
place, and one can also send kernel patches there.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

MAINTAINERS

@@ -4793,6 +4793,7 @@ M:	Lauro Ramos Venancio <lauro.venancio@openbossa.org>
 M:	Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
 M:	Samuel Ortiz <sameo@linux.intel.com>
 L:	linux-wireless@vger.kernel.org
+L:	linux-nfc@lists.01.org (moderated for non-subscribers)
 S:	Maintained
 F:	net/nfc/
 F:	include/linux/nfc.h