iw: Add signal average to station information

Patch from: kentarou matsuyama <matsuyama@thinktube.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25109 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/iw/patches/500-sta-signal-avg.patch

@@ -0,0 +1,36 @@
+iw: add signal average to station information
+
+From: Bruno Randolf <br1@einfach.org>
+
+
+---
+ nl80211.h |    1 +
+ station.c |    3 +++
+ 2 files changed, 4 insertions(+), 0 deletions(-)
+
+diff --git a/nl80211.h b/nl80211.h
+index 276fec0..9da840d 100644
+--- a/nl80211.h
++++ b/nl80211.h
+@@ -1179,6 +1179,7 @@ enum nl80211_sta_info {
+ 	NL80211_STA_INFO_TX_PACKETS,
+ 	NL80211_STA_INFO_TX_RETRIES,
+ 	NL80211_STA_INFO_TX_FAILED,
++	NL80211_STA_INFO_SIGNAL_AVG,
+ 
+ 	/* keep last */
+ 	__NL80211_STA_INFO_AFTER_LAST,
+diff --git a/station.c b/station.c
+index 7639553..20f4ad4 100644
+--- a/station.c
++++ b/station.c
+@@ -107,6 +107,9 @@ static int print_sta_handler(struct nl_msg *msg, void *arg)
+ 	if (sinfo[NL80211_STA_INFO_SIGNAL])
+ 		printf("\n\tsignal:  \t%d dBm",
+ 			(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
++	if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
++		printf("\n\tsignal avg:\t%d dBm",
++			(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]));
+ 
+ 	if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
+ 		if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,