net: wan: code indent use tabs where possible

Code indent should use tabs where possible.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wan/wanxl.c

@@ -237,7 +237,7 @@ static irqreturn_t wanxl_intr(int irq, void *dev_id)
 	u32 stat;
 	int handled = 0;
 
-        while((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
+	while ((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
 		handled = 1;
 		writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);