mt76x2: fix tssi initialization for 5GHz band

Fix mcu initial configuration for tssi calibration on 5GHz band

Fixes: 7bc04215a66b ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>

mt76x2_phy.c

@@ -197,7 +197,7 @@ mt76x2_phy_tssi_init_cal(struct mt76x2_dev *dev)
 	if (mt76x2_channel_silent(dev))
 		return false;
 
-	if (chan->band == NL80211_BAND_2GHZ)
+	if (chan->band == NL80211_BAND_5GHZ)
 		flag |= BIT(0);
 
 	if (mt76x2_ext_pa_enabled(dev, chan->band))