mt76: mt7915: fix sparse warnings: incorrect type initializer

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:2317:31: sparse: sparse:
incorrect type in initializer (different base types)

Fixes: 5517f78b ("mt76: mt7915: enable firmware module debug support")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -2671,7 +2671,7 @@ int mt7915_mcu_fw_dbg_ctrl(struct mt7915_dev *dev, u32 module, u8 level)
 		u16 len;
 		u8 level;
 		u8 rsv[3];
-		u32 module_idx;
+		__le32 module_idx;
 	} data = {
 		.module_idx = cpu_to_le32(module),
 		.level = level,