be2net: swap only first 2 fields of mcc_wrb

Only the first two fields of mcc wrb - embedded, payload_len
need to be cpu_to_le32() swapped while issuing a cmd to the hw.
The fields tag0, tag1 are opaque and returned back to cpu as is...
Signed-off-by: NSathya Perla <sathyap@serverengines.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/benet/be_cmds.c

@@ -286,7 +286,7 @@ static void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
 				MCC_WRB_SGE_CNT_SHIFT;
 	wrb->payload_length = payload_len;
 	wrb->tag0 = opcode;
-	be_dws_cpu_to_le(wrb, 20);
+	be_dws_cpu_to_le(wrb, 8);
 }
 
 /* Don't touch the hdr after it's prepared */