MAINTAINERS: Add maintainer for iwlwifi

Add Johannes Berg as the primary maintainer for iwlwifi driver

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 6010b9d..f6dfba3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3592,6 +3592,7 @@
 F:	drivers/net/wireless/iwlegacy/
 
 INTEL WIRELESS WIFI LINK (iwlwifi)
+M:	Johannes Berg <johannes.berg@intel.com>
 M:	Wey-Yi Guy <wey-yi.w.guy@intel.com>
 M:	Intel Linux Wireless <ilw@linux.intel.com>
 L:	linux-wireless@vger.kernel.org