appletalk: Add atalk.h header files to MAINTAINERS file

Add the path names here so that git-send-email can pick up the
netdev@vger.kernel.org Cc line automatically for a patch that
only touches the headers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -1034,6 +1034,8 @@ L:	netdev@vger.kernel.org
 S:	Odd fixes
 F:	drivers/net/appletalk/
 F:	net/appletalk/
+F:	include/linux/atalk.h
+F:	include/uapi/linux/atalk.h
 
 APPLIED MICRO (APM) X-GENE DEVICE TREE SUPPORT
 M:	Duc Dang <dhdang@apm.com>