net/mlx5e: Add vnic steering drop statistics

Added the following packets drop counter:
Rx steering missed dropped packets - counts packets which were dropped
due to miss on NIC rx steering rules.
This counter will be shown on ethtool as a new counter called
rx_steer_missed_packets.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 52e373d..9202113 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1008,7 +1008,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_330[0xb];
 	u8         log_max_xrcd[0x5];
 
-	u8         reserved_at_340[0x8];
+	u8         nic_receive_steering_discard[0x1];
+	u8         reserved_at_341[0x7];
 	u8         log_max_flow_counter_bulk[0x8];
 	u8         max_flow_counter_15_0[0x10];