isdn: hysdn_procconf.c build fix

x86.git randconfig testing found the following build error in latest
-git:

CC [M] drivers/isdn/hysdn/hysdn_procconf.o
CC [M] drivers/isdn/hysdn/hysdn_init.o
drivers/isdn/hysdn/hysdn_procconf.c: In function 'hysdn_procconf_init':
drivers/isdn/hysdn/hysdn_procconf.c:408: error: too few arguments to function 'proc_create'

with the following config:

http://redhat.com/~mingo/misc/config-Wed_Apr_30_15_12_48_CEST_2008.bad

Signed-off-by: Ingo Molnar <[e-mail]>
Cc: "Denis V. Lunev" <[e-mail]>
Cc: Karsten Keil <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/isdn/hysdn/hysdn_procconf.c

···
 		sprintf(conf_name, "%s%d", PROC_CONF_BASENAME, card->myid);
 		if ((card->procconf = (void *) proc_create(conf_name,
 						S_IFREG | S_IRUGO | S_IWUSR,
-						hysdn_proc_entry)) != NULL) {
+						hysdn_proc_entry,
+						&conf_fops)) != NULL) {
 			hysdn_proclog_init(card);	/* init the log file entry */
 		}
 		card = card->next;	/* next entry */