net: moxa: Remove extra space after a cast

No space is necessary after a cast
This warning is found using checkpatch.pl
Signed-off-by: NSZ Lin <sz.lin@moxa.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/moxa/moxart_ether.c

@@ -311,7 +311,7 @@ static void moxart_tx_finished(struct net_device *ndev)
 
 static irqreturn_t moxart_mac_interrupt(int irq, void *dev_id)
 {
-	struct net_device *ndev = (struct net_device *) dev_id;
+	struct net_device *ndev = (struct net_device *)dev_id;
 	struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 	unsigned int ists = readl(priv->base + REG_INTERRUPT_STATUS);