sbus: convert drivers/sbus/char/* to use module_platform_driver()

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

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/sbus/char/bbc_i2c.c b/drivers/sbus/char/bbc_i2c.c
index a0d1399..5426682 100644
--- a/drivers/sbus/char/bbc_i2c.c
+++ b/drivers/sbus/char/bbc_i2c.c
@@ -416,17 +416,6 @@
 	.remove		= __devexit_p(bbc_i2c_remove),
 };
 
-static int __init bbc_i2c_init(void)
-{
-	return platform_driver_register(&bbc_i2c_driver);
-}
-
-static void __exit bbc_i2c_exit(void)
-{
-	platform_driver_unregister(&bbc_i2c_driver);
-}
-
-module_init(bbc_i2c_init);
-module_exit(bbc_i2c_exit);
+module_platform_driver(bbc_i2c_driver);
 
 MODULE_LICENSE("GPL");