be2net: convert dest field in udp-hdr to host-endian

The "dest" field in the UDP-hdr of a TX skb is in network endian format.
Convert it to host endian before accessing it. The os2bmc patch,
mentioned below introduced this code.

Fixes: 760c295e ("be2net: Support for OS2BMC")
Signed-off-by: NVenkat Duvvuru <VenkatKumar.Duvvuru@Emulex.com>
Signed-off-by: NSathya Perla <sathya.perla@avagotech.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be_main.c

@@ -1254,7 +1254,7 @@ static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
 	if (is_udp_pkt((*skb))) {
 		struct udphdr *udp = udp_hdr((*skb));
 
-		switch (udp->dest) {
+		switch (ntohs(udp->dest)) {
 		case DHCP_CLIENT_PORT:
 			os2bmc = is_dhcp_client_filt_enabled(adapter);
 			goto done;