arcnet: Wrap some long lines

Just neatening.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
diff --git a/drivers/net/arcnet/rfc1051.c b/drivers/net/arcnet/rfc1051.c
index b76e458..691bee5 100644
--- a/drivers/net/arcnet/rfc1051.c
+++ b/drivers/net/arcnet/rfc1051.c
@@ -213,7 +213,8 @@
 	arc_printk(D_DURING, dev, "prepare_tx: txbufs=%d/%d/%d\n",
 		   lp->next_tx, lp->cur_tx, bufnum);
 
-	length -= ARC_HDR_SIZE;	/* hard header is not included in packet length */
+	/* hard header is not included in packet length */
+	length -= ARC_HDR_SIZE;
 
 	if (length > XMTU) {
 		/* should never happen! other people already check for this. */