net/mlx5: Add VDPA interface type to supported enumerations

VDPA is a new interface that will be added in subsequent patches. It
uses mlx5 core devices and resources. Add an interface type for it.

Signed-off-by: Eli Cohen <[email protected]>
Reviewed-by: Parav Pandit <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>

Author: Eli Cohen

include/linux/mlx5/driver.h

@@ -1054,6 +1054,7 @@ enum {
 enum {
 	MLX5_INTERFACE_PROTOCOL_IB  = 0,
 	MLX5_INTERFACE_PROTOCOL_ETH = 1,
+	MLX5_INTERFACE_PROTOCOL_VDPA = 2,
 };
 
 struct mlx5_interface {