Input: convert SPI drivers to use module_spi_driver()

This patch converts the drivers in drivers/input/* to use the
module_spi_driver() macro which makes the code smaller and a bit
simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index 067d956..b6adeae 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -747,17 +747,7 @@
 	.remove	= __devexit_p(tsc2005_remove),
 };
 
-static int __init tsc2005_init(void)
-{
-	return spi_register_driver(&tsc2005_driver);
-}
-module_init(tsc2005_init);
-
-static void __exit tsc2005_exit(void)
-{
-	spi_unregister_driver(&tsc2005_driver);
-}
-module_exit(tsc2005_exit);
+module_spi_driver(tsc2005_driver);
 
 MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
 MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");