Input: convert obsolete strict_strtox to kstrtox

With commit 67d0a07544 we mark strict_strtox
as obsolete. Convert all remaining such uses in drivers/input/.

Also change long to appropriate types, and return error conditions
from kstrtox separately, as Dmitry sugguests.

Signed-off-by: JJ Ding <dgdunix@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/mouse/logips2pp.c

@@ -155,9 +155,14 @@ static ssize_t ps2pp_attr_show_smartscroll(struct psmouse *psmouse,
 static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data,
 					  const char *buf, size_t count)
 {
-	unsigned long value;
+	unsigned int value;
+	int err;
 
-	if (strict_strtoul(buf, 10, &value) || value > 1)
+	err = kstrtouint(buf, 10, &value);
+	if (err)
+		return err;
+
+	if (value > 1)
 		return -EINVAL;
 
 	ps2pp_set_smartscroll(psmouse, value);