Input: Fix a warning in psmouse-base.c

Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NVojtech Pavlik <vojtech@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/mouse/psmouse-base.c

@@ -972,7 +972,7 @@ static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
 		return -EINVAL;
 
 	if (!strncmp(val, "any", 3)) {
-		*((unsigned int *)kp->arg) = -1UL;
+		*((unsigned int *)kp->arg) = -1U;
 		return 0;
 	}