net/mlx: fix build with icc

net/mlx: fix build with icc

Compilation errors:
mlx4:
  drivers/net/mlx4/mlx4.c(5409): error #188:
  enumerated type mixed with another type
          priv->intr_handle.type = 0;
                                 ^
mlx5:
  drivers/net/mlx5/mlx5_rxq.c(282): error #188:
  enumerated type mixed with another type
        enum hash_rxq_type type = 0;
                                  ^
and more same type of error.
Fix these by assigning enum values rather than integer values to the enum
variables

Fixes: c4da6caa426d ("mlx4: handle link status interrupts")
Fixes: 198a3c339a8f ("mlx5: handle link status interrupts")
Fixes: 0d2186743d62 ("mlx5: manage all special flow types at once")
Fixes: 612ad38209f7 ("mlx5: fix hash Rx queue type in RSS mode")
Fixes: 083c2dd31776 ("mlx5: refactor special flows handling")
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>