[hermon] Enable priority flow control on the FCoE priority

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/infiniband/hermon.c

 #include <ipxe/ib_smc.h>
 #include <ipxe/if_ether.h>
 #include <ipxe/ethernet.h>
+#include <ipxe/fcoe.h>
 #include "hermon.h"
 
 /**
 		     v_pptx, 1 );
 	MLX_FILL_1 ( &set_port.general, 1,
 		     mtu, ( ETH_FRAME_LEN + 40 /* Used by card */ ) );
-	MLX_FILL_1 ( &set_port.general, 2, pptx, 1 );
-	MLX_FILL_1 ( &set_port.general, 3, pprx, 1 );
+	MLX_FILL_2 ( &set_port.general, 2,
+		     pfctx, ( 1 << FCOE_VLAN_PRIORITY ),
+		     pptx, 1 );
+	MLX_FILL_2 ( &set_port.general, 3,
+		     pfcrx, ( 1 << FCOE_VLAN_PRIORITY ),
+		     pprx, 1 );
 	if ( ( rc = hermon_cmd_set_port ( hermon, 1,
 					  ( HERMON_SET_PORT_GENERAL_PARAM |
 					    ibdev->port ),