ath10k: set phymode to 11b when NO_OFDM flag set

phymode should use 11b only if NO_OFDM flags is set.
Hence check up channel flag for NO_OFDM and set to
11b.

Signed-off-by: Peter Oh <poh@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/mac.c

@@ -269,7 +269,10 @@ chan_to_phymode(const struct cfg80211_chan_def *chandef)
 	case IEEE80211_BAND_2GHZ:
 		switch (chandef->width) {
 		case NL80211_CHAN_WIDTH_20_NOHT:
-			phymode = MODE_11G;
+			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
+				phymode = MODE_11B;
+			else
+				phymode = MODE_11G;
 			break;
 		case NL80211_CHAN_WIDTH_20:
 			phymode = MODE_11NG_HT20;