net/mlx5e: Fix feature check per profile

Remove redundant space when constructing the feature's enum. Validate
against the indented enum value.

Fixes: 6c72cb05

 ("net/mlx5e: Use bitmap field for profile features")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>