net: pktgen: fix code style (ERROR: space prohibited after that '&')

Fix checkpatch code style errors/checks:

  CHECK: No space is necessary after a cast
  kernel-patches#2984: FILE: net/core/pktgen.c:2984:
  +       *(__be16 *) & eth[12] = protocol;

  ERROR: space prohibited after that '&' (ctx:WxW)
  kernel-patches#2984: FILE: net/core/pktgen.c:2984:
  +       *(__be16 *) & eth[12] = protocol;

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: NipaLocal <nipa@local>

Author: pseiderer

net/core/pktgen.c

@@ -2981,7 +2981,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
 	skb->priority = pkt_dev->skb_priority;
 
 	memcpy(eth, pkt_dev->hh, 12);
-	*(__be16 *) & eth[12] = protocol;
+	*(__be16 *)&eth[12] = protocol;
 
 	/* Eth + IPh + UDPh + mpls */
 	datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -