ath9k: remove the signal strength fix, it causes a lot of confusion and seems to be just as inaccurate as the original version of the code

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26753 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/mac80211/patches/530-ath9k_fix_reported_signal_strength.patch

@@ -1,27 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/recv.c
-+++ b/drivers/net/wireless/ath/ath9k/recv.c
-@@ -956,6 +956,9 @@ static int ath9k_rx_skb_preprocess(struc
- 				   struct ieee80211_rx_status *rx_status,
- 				   bool *decrypt_error)
- {
-+	struct ath_hw *ah = common->ah;
-+	int noise;
-+
- 	memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
- 
- 	/*
-@@ -976,7 +979,13 @@ static int ath9k_rx_skb_preprocess(struc
- 
- 	rx_status->band = hw->conf.channel->band;
- 	rx_status->freq = hw->conf.channel->center_freq;
--	rx_status->signal = ATH_DEFAULT_NOISE_FLOOR + rx_stats->rs_rssi;
-+
-+	if (ah->curchan && ah->curchan->noisefloor)
-+		noise = ah->curchan->noisefloor;
-+	else
-+		noise = ATH_DEFAULT_NOISE_FLOOR;
-+
-+	rx_status->signal = noise + rx_stats->rs_rssi;
- 	rx_status->antenna = rx_stats->rs_antenna;
- 	rx_status->flag |= RX_FLAG_MACTIME_MPDU;
-