mt76: mt7915: fix endianness warnings in mt7915_debugfs_rx_fw_monitor

Fix the following sparse warnings:
warning: incorrect type in initializer (different base types)
   expected restricted __le16 [usertype] msg_type
   got int
warning: incorrect type in assignment (different base types)
   expected restricted __le32 [usertype] timestamp
   got unsigned int

Fixes: 988845c9 ("mt76: mt7915: add support for passing chip/firmware debug data to user space")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -947,13 +947,13 @@ void mt7915_debugfs_rx_fw_monitor(struct mt7915_dev *dev, const void *data, int
 		__le16 len;
 	} hdr = {
 		.magic = cpu_to_le32(FW_BIN_LOG_MAGIC),
-		.msg_type = PKT_TYPE_RX_FW_MONITOR,
+		.msg_type = cpu_to_le16(PKT_TYPE_RX_FW_MONITOR),
 	};
 
 	if (!dev->relay_fwlog)
 		return;
 
-	hdr.timestamp = mt76_rr(dev, MT_LPON_FRCR(0));
+	hdr.timestamp = cpu_to_le32(mt76_rr(dev, MT_LPON_FRCR(0)));
 	hdr.len = *(__le16 *)data;
 	mt7915_debugfs_write_fwlog(dev, &hdr, sizeof(hdr), data, len);
 }