cxgb4: fix boolreturn.cocci warnings

drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c:49:9-10: WARNING: return of 0/1 in function 'cxgb_fcoe_sof_eof_supported' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

CC: Varun Prakash <varun@chelsio.com>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c

@@ -46,17 +46,17 @@ bool cxgb_fcoe_sof_eof_supported(struct adapter *adap, struct sk_buff *skb)
 
 	if ((sof != FC_SOF_I3) && (sof != FC_SOF_N3)) {
 		dev_err(adap->pdev_dev, "Unsupported SOF 0x%x\n", sof);
-		return 0;
+		return false;
 	}
 
 	skb_copy_bits(skb, skb->len - 4, &eof, 1);
 
 	if ((eof != FC_EOF_N) && (eof != FC_EOF_T)) {
 		dev_err(adap->pdev_dev, "Unsupported EOF 0x%x\n", eof);
-		return 0;
+		return false;
 	}
 
-	return 1;
+	return true;
 }
 
 /**