Input: q40kbd - make q40kbd_lock static

This patch makes the needlessly global q40kbd_lock static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/serio/q40kbd.c b/drivers/input/serio/q40kbd.c
index eca125c..ab28cf5 100644
--- a/drivers/input/serio/q40kbd.c
+++ b/drivers/input/serio/q40kbd.c
@@ -47,7 +47,7 @@
 MODULE_DESCRIPTION("Q40 PS/2 keyboard controller driver");
 MODULE_LICENSE("GPL");
 
-DEFINE_SPINLOCK(q40kbd_lock);
+static DEFINE_SPINLOCK(q40kbd_lock);
 static struct serio *q40kbd_port;
 static struct platform_device *q40kbd_device;