ncr5380: Add missing break after case MESSAGE_REJECT

MESSAGE REJECT does not imply DISCONNECT: the target is about to enter
MESSAGE IN or MESSAGE OUT phase.

This bug fix comes from atari_NCR5380.c. Unfortunately it never made it
into the original NCR5380.c core driver.
Signed-off-by: NFinn Thain <fthain@telegraphics.com.au>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Tested-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/NCR5380.c

@@ -1990,6 +1990,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) {
 					default:
 						break;
 					}
+					break;
 				case DISCONNECT:{
 						/* Accept message by clearing ACK */
 						NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);