enetc: fix return value for enetc_ioctl()

Return -EOPNOTSUPP instead of -EINVAL if the requested ioctl is not
implemented.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Walle 2019-11-08 00:58:21 +01:00 • committed by David S. Miller
commit c55b810abb