ionic: remove noise from ethtool rxnfc error msg

stable inclusion
from stable-v5.10.180
commit 02359ba526ce4df4fbb1ed03684c1a15c0e6c8da
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8FC2O

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=02359ba526ce4df4fbb1ed03684c1a15c0e6c8da



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[ Upstream commit 3711d44f ]

It seems that ethtool is calling into .get_rxnfc more often with
ETHTOOL_GRXCLSRLCNT which ionic doesn't know about.  We don't
need to log a message about it, just return not supported.

Fixes: aa319881 ("ionic: Add RSS support")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>