r8152: fix the wrong spelling

Replace rumtime with runtime.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/r8152.c

@@ -3576,7 +3576,7 @@ static bool delay_autosuspend(struct r8152 *tp)
 		return false;
 }
 
-static int rtl8152_rumtime_suspend(struct r8152 *tp)
+static int rtl8152_runtime_suspend(struct r8152 *tp)
 {
 	struct net_device *netdev = tp->netdev;
 	int ret = 0;
@@ -3653,7 +3653,7 @@ static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message)
 	mutex_lock(&tp->control);
 
 	if (PMSG_IS_AUTO(message))
-		ret = rtl8152_rumtime_suspend(tp);
+		ret = rtl8152_runtime_suspend(tp);
 	else
 		ret = rtl8152_system_suspend(tp);