qeth: replace ENOSYS with EOPNOTSUPP

Since recently, `checkpatch.pl` advices that ENOSYS should not be
used for anything other than "invalid syscall nr". This patch
replaces ENOSYS return code with EOPNOTSUPP for the "unsupported
function" conditions.
Signed-off-by: NEugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: NUrsula Braun <ursula.braun@de.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_l2_main.c

@@ -137,7 +137,7 @@ static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
 		rc = 0;
 		break;
 	case IPA_RC_L2_UNSUPPORTED_CMD:
-		rc = -ENOSYS;
+		rc = -EOPNOTSUPP;
 		break;
 	case IPA_RC_L2_ADDR_TABLE_FULL:
 		rc = -ENOSPC;
@@ -1662,7 +1662,7 @@ static int qeth_bridgeport_makerc(struct qeth_card *card,
 			break;
 		case 0x2B04:
 		case 0x0004:
-			rc = -ENOSYS;
+			rc = -EOPNOTSUPP;
 			break;
 		case 0x2B0C:
 		case 0x000C: /* Not configured as bridge Port */
@@ -1717,10 +1717,10 @@ static int qeth_bridgeport_makerc(struct qeth_card *card,
 	else
 		switch (cbctl->ipa_rc) {
 		case IPA_RC_NOTSUPP:
-			rc = -ENOSYS;
+			rc = -EOPNOTSUPP;
 			break;
 		case IPA_RC_UNSUPPORTED_COMMAND:
-			rc = -ENOSYS;
+			rc = -EOPNOTSUPP;
 			break;
 		default:
 			rc = -EIO;
@@ -1948,7 +1948,7 @@ static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
 		case 0x0004:
 		case 0x0100:
 		case 0x0106:
-			rc = -ENOSYS;
+			rc = -EOPNOTSUPP;
 			dev_err(&card->gdev->dev,
 				"Setting address notification failed\n");
 			break;