Revert "b43: trivial: do not report any link quality instead of invalid one"

This reverts commit 55ad5962.

I assumed N is newer than LP, which isn't true. This regressed LP case.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/xmit.c

@@ -735,13 +735,11 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
 	}
 
 	/* Link quality statistics */
-	if ((chanstat & B43_RX_CHAN_PHYTYPE) >= B43_PHYTYPE_N) {
-		/*
-		s8 rssi = max(rxhdr->power0, rxhdr->power1);
-		TODO: Find out what the rssi value is (dBm or percentage?)
-		      and also find out what the maximum possible value is.
-		      Fill status.ssi and status.signal fields.
-		*/
+	if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
+//		s8 rssi = max(rxhdr->power0, rxhdr->power1);
+		//TODO: Find out what the rssi value is (dBm or percentage?)
+		//      and also find out what the maximum possible value is.
+		//      Fill status.ssi and status.signal fields.
 	} else {
 		status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
 						  (phystat0 & B43_RX_PHYST0_OFDM),