MAINTAINERS: iwlwifi: update contact email

The ilw@linux.intel.com address is being phased out, replace
it with the new address.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

MAINTAINERS

@@ -5541,7 +5541,7 @@ F:	drivers/net/wireless/iwlegacy/
 INTEL WIRELESS WIFI LINK (iwlwifi)
 M:	Johannes Berg <johannes.berg@intel.com>
 M:	Emmanuel Grumbach <emmanuel.grumbach@intel.com>
-M:	Intel Linux Wireless <ilw@linux.intel.com>
+M:	Intel Linux Wireless <linuxwifi@intel.com>
 L:	linux-wireless@vger.kernel.org
 W:	http://intellinuxwireless.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi.git