net/mlx5: Verify Hardware supports requested ptp function on a given pin

Fix a bug where driver did not verify Hardware pin capabilities for
PTP functions.

Fixes: ee7f1220

 ("net/mlx5e: Implement 1PPS support")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>