mt76: mt7915: do not pass data pointer to mt7915_mcu_muru_debug_set

Fix typo in mt7915_muru_debug_set routine and pass muru_debug value to
mt7915_mcu_muru_debug_set() instead of data pointer.

Fixes: 1966a507 ("mt76: mt7915: add mu-mimo and ofdma debugfs knobs")
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

@@ -95,7 +95,7 @@ mt7915_muru_debug_set(void *data, u64 val)
 	struct mt7915_dev *dev = data;
 
 	dev->muru_debug = val;
-	mt7915_mcu_muru_debug_set(dev, data);
+	mt7915_mcu_muru_debug_set(dev, dev->muru_debug);
 
 	return 0;
 }