net/mlx5e: Remove HW-GRO from reported features

[ Upstream commit 6bbd7230 ]

We got reports of certain HW-GRO flows causing kernel call traces, which
might be related to firmware. To be on the safe side, disable the
feature for now and re-enable it once a driver/firmware fix is found.

Fixes: 83439f3c

 ("net/mlx5e: Add HW-GRO offload")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>