Blackfin: dpmc: use module_platform_driver macro

This patch removes some code duplication by using
module_platform_driver.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
diff --git a/arch/blackfin/mach-common/dpmc.c b/arch/blackfin/mach-common/dpmc.c
index f5685a4..978bb40 100644
--- a/arch/blackfin/mach-common/dpmc.c
+++ b/arch/blackfin/mach-common/dpmc.c
@@ -157,24 +157,7 @@
 		.name = DRIVER_NAME,
 	}
 };
-
-/**
- *	bfin_dpmc_init - Init driver
- */
-static int __init bfin_dpmc_init(void)
-{
-	return platform_driver_register(&bfin_dpmc_device_driver);
-}
-module_init(bfin_dpmc_init);
-
-/**
- *	bfin_dpmc_exit - break down driver
- */
-static void __exit bfin_dpmc_exit(void)
-{
-	platform_driver_unregister(&bfin_dpmc_device_driver);
-}
-module_exit(bfin_dpmc_exit);
+module_platform_driver(bfin_dpmc_device_driver);
 
 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
 MODULE_DESCRIPTION("cpu power management driver for Blackfin");