netlink: implement nla_get_in_addr and nla_get_in6_addr

Those are counterparts to nla_put_in_addr and nla_put_in6_addr.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 6a4a4d7..2fb804b 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8993,8 +8993,8 @@
 	cfg = kzalloc(size, GFP_KERNEL);
 	if (!cfg)
 		return -ENOMEM;
-	cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
-	cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
+	cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
+	cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
 	memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
 	       ETH_ALEN);
 	if (tb[NL80211_WOWLAN_TCP_SRC_PORT])