IB/ipath: Drop support for the original QHT7040 board

The original QHT7040 had significant performance issues so there was an
additional check in the driver for a newer serial number.  Support for
the small quantities of that board shipped has been dropped, so this
patch removes the special checks to simplify the code.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ipath/ipath_iba6110.c

@@ -1595,8 +1595,7 @@ static int ipath_ht_early_init(struct ipath_devdata *dd)
 	}
 
 	ipath_get_eeprom_info(dd);
-	if (dd->ipath_boardrev == 5 && dd->ipath_serial[0] == '1' &&
-		dd->ipath_serial[1] == '2' && dd->ipath_serial[2] == '8') {
+	if (dd->ipath_boardrev == 5) {
 		/*
 		 * Later production QHT7040 has same changes as QHT7140, so
 		 * can use GPIO interrupts.  They have serial #'s starting