Input: make some variables and functions static

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/mouse/gpio_mouse.c b/drivers/input/mouse/gpio_mouse.c
index 72cf5e3..0db8d16 100644
--- a/drivers/input/mouse/gpio_mouse.c
+++ b/drivers/input/mouse/gpio_mouse.c
@@ -173,7 +173,7 @@
 /* work with hotplug and coldplug */
 MODULE_ALIAS("platform:gpio_mouse");
 
-struct platform_driver gpio_mouse_device_driver = {
+static struct platform_driver gpio_mouse_device_driver = {
 	.remove		= __devexit_p(gpio_mouse_remove),
 	.driver		= {
 		.name	= "gpio_mouse",