power: qe_ic - 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: Timur Tabi <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Signed-off-by: Kay Sievers <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

arch/powerpc/sysdev/qe_lib/qe_ic.c

···
 #include <linux/stddef.h>
 #include <linux/sched.h>
 #include <linux/signal.h>
-#include <linux/sysdev.h>
 #include <linux/device.h>
 #include <linux/bootmem.h>
 #include <linux/spinlock.h>
···
 	return 0;
 }
 
-static struct sysdev_class qe_ic_sysclass = {
+static struct bus_type qe_ic_subsys = {
 	.name = "qe_ic",
+	.dev_name = "qe_ic",
 };
 
-static struct sys_device device_qe_ic = {
+static struct device device_qe_ic = {
 	.id = 0,
-	.cls = &qe_ic_sysclass,
+	.bus = &qe_ic_subsys,
 };
 
 static int __init init_qe_ic_sysfs(void)
···
 
 	printk(KERN_DEBUG "Registering qe_ic with sysfs...\n");
 
-	rc = sysdev_class_register(&qe_ic_sysclass);
+	rc = subsys_system_register(&qe_ic_subsys, NULL);
 	if (rc) {
 		printk(KERN_ERR "Failed registering qe_ic sys class\n");
 		return -ENODEV;
 	}
-	rc = sysdev_register(&device_qe_ic);
+	rc = device_register(&device_qe_ic);
 	if (rc) {
 		printk(KERN_ERR "Failed registering qe_ic sys device\n");
 		return -ENODEV;