checkpatch: treat jenkins as valid email

This is needed to avoid checkpatch barking on already committed patches.

Change-Id: Ic2b4cfa04c8230d45c68bbf6b370841f682b32d6
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1785
Tested-by: jenkins
Reviewed-by: Jens Bauer <jens@gpio.dk>
Reviewed-by: Mathias Küster <kesmtp@freenet.de>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

tools/scripts/checkpatch.pl

@@ -446,6 +446,8 @@ sub parse_email {
 			$address = "";
 			$comment = "";
 		}
+	} elsif ($formatted_email eq "jenkins") {
+		$address = "jenkins"
 	}
 
 	$name =~ s/^\s+|\s+$//g;