cpuidle: use default_groups in kobj_type

There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the cpuidle sysfs code to use default_groups field which
has been the preferred way since aa30f47c ("kobject: Add support for
default attribute groups to kobj_type") so that we can soon get rid of
the obsolete default_attrs field.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpuidle/sysfs.c

@@ -335,6 +335,7 @@ static struct attribute *cpuidle_state_default_attrs[] = {
 	&attr_default_status.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(cpuidle_state_default);
 
 struct cpuidle_state_kobj {
 	struct cpuidle_state *state;
@@ -448,7 +449,7 @@ static void cpuidle_state_sysfs_release(struct kobject *kobj)
 
 static struct kobj_type ktype_state_cpuidle = {
 	.sysfs_ops = &cpuidle_state_sysfs_ops,
-	.default_attrs = cpuidle_state_default_attrs,
+	.default_groups = cpuidle_state_default_groups,
 	.release = cpuidle_state_sysfs_release,
 };
 
@@ -591,10 +592,11 @@ static struct attribute *cpuidle_driver_default_attrs[] = {
 	&attr_driver_name.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(cpuidle_driver_default);
 
 static struct kobj_type ktype_driver_cpuidle = {
 	.sysfs_ops = &cpuidle_driver_sysfs_ops,
-	.default_attrs = cpuidle_driver_default_attrs,
+	.default_groups = cpuidle_driver_default_groups,
 	.release = cpuidle_driver_sysfs_release,
 };