arm: convert sysdev_class to a regular subsystem

After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Boojin Kim <boojin.kim@samsung.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/arch/arm/mach-s3c2416/pm.c b/arch/arm/mach-s3c2416/pm.c
index 9ec54f1..3bdb15a 100644
--- a/arch/arm/mach-s3c2416/pm.c
+++ b/arch/arm/mach-s3c2416/pm.c
@@ -10,7 +10,7 @@
  * published by the Free Software Foundation.
 */
 
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/syscore_ops.h>
 #include <linux/io.h>
 
@@ -48,7 +48,7 @@
 	__raw_writel(virt_to_phys(s3c_cpu_resume), S3C2412_INFORM1);
 }
 
-static int s3c2416_pm_add(struct sys_device *sysdev)
+static int s3c2416_pm_add(struct device *dev)
 {
 	pm_cpu_prep = s3c2416_pm_prepare;
 	pm_cpu_sleep = s3c2416_cpu_suspend;
@@ -56,13 +56,15 @@
 	return 0;
 }
 
-static struct sysdev_driver s3c2416_pm_driver = {
-	.add		= s3c2416_pm_add,
+static struct subsys_interface s3c2416_pm_interface = {
+	.name		= "s3c2416_pm",
+	.subsys		= &s3c2416_subsys,
+	.add_dev	= s3c2416_pm_add,
 };
 
 static __init int s3c2416_pm_init(void)
 {
-	return sysdev_driver_register(&s3c2416_sysclass, &s3c2416_pm_driver);
+	return subsys_interface_register(&s3c2416_pm_interface);
 }
 
 arch_initcall(s3c2416_pm_init);