selftests/bpf: Fix style warnings

Silence three checkpatch style warnings.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210122154725.22140-4-bjorn.topel@gmail.com

tools/testing/selftests/bpf/xdpxceiver.c

@@ -734,8 +734,8 @@ static void worker_pkt_validate(void)
 			break;
 		/*do not increment pktcounter if !(tos=0x9 and ipv4) */
 		if ((((struct iphdr *)(pkt_node_rx_q->pkt_frame +
-				       sizeof(struct ethhdr)))->version == IP_PKT_VER)
-		    && (((struct iphdr *)(pkt_node_rx_q->pkt_frame + sizeof(struct ethhdr)))->tos ==
+				       sizeof(struct ethhdr)))->version == IP_PKT_VER) &&
+		    (((struct iphdr *)(pkt_node_rx_q->pkt_frame + sizeof(struct ethhdr)))->tos ==
 			IP_PKT_TOS)) {
 			payloadseqnum = *((uint32_t *)(pkt_node_rx_q->pkt_frame + PKT_HDR_SIZE));
 			if (debug_pkt_dump && payloadseqnum != EOT) {