[S390] cio: Clear correct bit in cio_release_console().

Fallout from the console isc 7 -> 1 change.
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>

drivers/s390/cio/cio.c

@@ -810,7 +810,7 @@ cio_release_console(void)
 {
 	console_subchannel.schib.pmcw.intparm = 0;
 	cio_modify(&console_subchannel);
-	ctl_clear_bit(6, 24);
+	ctl_clear_bit(6, 30);
 	console_subchannel_in_use = 0;
 }