mt76x0: phy: fix bank check in mt76x0_rf_csr_{wr,rr}

Fix typo in bank check in mt76x0_rf_csr_{wr,rr} routines.
This issue has never been hit since mt76x0_rf_csr_{wr,rr}
are actually used just by pci code

Fixes: 10de7a8b ("mt76x0: phy files")
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x0/phy.c

@@ -37,7 +37,7 @@ mt76x0_rf_csr_wr(struct mt76x02_dev *dev, u32 offset, u8 value)
 	bank = MT_RF_BANK(offset);
 	reg = MT_RF_REG(offset);
 
-	if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank) > 8)
+	if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank > 8))
 		return -EINVAL;
 
 	mutex_lock(&dev->phy_mutex);
@@ -76,7 +76,7 @@ static int mt76x0_rf_csr_rr(struct mt76x02_dev *dev, u32 offset)
 	bank = MT_RF_BANK(offset);
 	reg = MT_RF_REG(offset);
 
-	if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank) > 8)
+	if (WARN_ON_ONCE(reg > 127) || WARN_ON_ONCE(bank > 8))
 		return -EINVAL;
 
 	mutex_lock(&dev->phy_mutex);