leds: convert led i2c drivers to module_i2c_driver

Factor out some boilerplate code for i2c driver registration
into module_i2c_driver.

Signed-off-by: Axel Lin <[email protected]>
Cc: Haojian Zhuang <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: Richard Purdie <[email protected]>
Cc: Michael Hennerich <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Guennadi Liakhovetski <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 66aa3e8..dcc3bc3 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -371,18 +371,7 @@
 	.id_table = pca955x_id,
 };
 
-static int __init pca955x_leds_init(void)
-{
-	return i2c_add_driver(&pca955x_driver);
-}
-
-static void __exit pca955x_leds_exit(void)
-{
-	i2c_del_driver(&pca955x_driver);
-}
-
-module_init(pca955x_leds_init);
-module_exit(pca955x_leds_exit);
+module_i2c_driver(pca955x_driver);
 
 MODULE_AUTHOR("Nate Case <[email protected]>");
 MODULE_DESCRIPTION("PCA955x LED driver");