char: mxser, fix ISA board lookup

There's a bug in the mxser kernel module that still appears in the
2.6.29.4 kernel.

mxser_get_ISA_conf takes a ioaddress as its first argument, by passing the
not of the ioaddr, you're effectively passing 0 which means it won't be
able to talk to an ISA card.  I have tested this, and removing the !
fixes the problem.

Cc: "Peter Botha" <peterb@goldcircle.co.za>
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/mxser.c

@@ -2711,7 +2711,7 @@ static int __init mxser_module_init(void)
 			continue;
 
 		brd = &mxser_boards[m];
-		retval = mxser_get_ISA_conf(!ioaddr[b], brd);
+		retval = mxser_get_ISA_conf(ioaddr[b], brd);
 		if (retval <= 0) {
 			brd->info = NULL;
 			continue;