qeth: HiperSockets mcl string conversion (pre z9 mach)

The pre z9 machines provide an mcl string in EBCDIC format,
z9 or later provide string in ASCII format.
Signed-off-by: NKlaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: NFrank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core_main.c

@@ -2250,7 +2250,8 @@ void qeth_print_status_message(struct qeth_card *card)
 		}
 		/* fallthrough */
 	case QETH_CARD_TYPE_IQD:
-		if (card->info.guestlan) {
+		if ((card->info.guestlan) ||
+		    (card->info.mcl_level[0] & 0x80)) {
 			card->info.mcl_level[0] = (char) _ebcasc[(__u8)
 				card->info.mcl_level[0]];
 			card->info.mcl_level[1] = (char) _ebcasc[(__u8)