nfp: Remove switchdev.h inclusion

This is no longer necessary after a5084bb7 ("nfp: Implement
ndo_get_port_parent_id()")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_port.c

@@ -3,7 +3,6 @@
 
 #include <linux/lockdep.h>
 #include <linux/netdevice.h>
-#include <net/switchdev.h>
 
 #include "nfpcore/nfp_cpp.h"
 #include "nfpcore/nfp_nsp.h"