MISC: convert drivers/misc/* to use module_spi_driver()

This patch converts the drivers in drivers/misc/* 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>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Daniel Mack <zonque@gmail.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c
index d3f229a..5acbba1 100644
--- a/drivers/misc/ti_dac7512.c
+++ b/drivers/misc/ti_dac7512.c
@@ -82,20 +82,9 @@
 	.remove	= __devexit_p(dac7512_remove),
 };
 
-static int __init dac7512_init(void)
-{
-	return spi_register_driver(&dac7512_driver);
-}
-
-static void __exit dac7512_exit(void)
-{
-	spi_unregister_driver(&dac7512_driver);
-}
+module_spi_driver(dac7512_driver);
 
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
 MODULE_DESCRIPTION("DAC7512 16-bit DAC");
 MODULE_LICENSE("GPL v2");
 MODULE_VERSION(DRIVER_VERSION);
-
-module_init(dac7512_init);
-module_exit(dac7512_exit);