virtio-net: make array guest_offloads static

The array guest_offloads is local to the source and does not need to
be in global scope, so make it static. Also tweak formatting.

Cleans up sparse warnings:
symbol 'guest_offloads' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/virtio_net.c

@@ -57,10 +57,12 @@ DECLARE_EWMA(pkt_len, 0, 64)
 
 #define VIRTNET_DRIVER_VERSION "1.0.0"
 
-const unsigned long guest_offloads[] = { VIRTIO_NET_F_GUEST_TSO4,
-					 VIRTIO_NET_F_GUEST_TSO6,
-					 VIRTIO_NET_F_GUEST_ECN,
-					 VIRTIO_NET_F_GUEST_UFO };
+static const unsigned long guest_offloads[] = {
+	VIRTIO_NET_F_GUEST_TSO4,
+	VIRTIO_NET_F_GUEST_TSO6,
+	VIRTIO_NET_F_GUEST_ECN,
+	VIRTIO_NET_F_GUEST_UFO
+};
 
 struct virtnet_stats {
 	struct u64_stats_sync tx_syncp;