net: can: replace strict_strtoul() with kstrtoul()

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 5566566..ce8421a 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1220,7 +1220,7 @@
 		goto out;
 	}
 
-	err = strict_strtoul(buf, 0, &can_id);
+	err = kstrtoul(buf, 0, &can_id);
 	if (err) {
 		ret = err;
 		goto out;