cpufreq: schedutil: Replace default_attrs field with groups

The kobj_type default_attrs field is being replaced by the
default_groups field. Replace sugov_tunables_ktype's default_attrs field
with default groups. Change "sugov_attributes" to "sugov_attrs" and use
the ATTRIBUTE_GROUPS macro to create sugov_groups.

This patch was tested by setting the scaling governor to schedutil and
verifying that the sysfs files for the attributes in the default groups
were created.
Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

kernel/sched/cpufreq_schedutil.c

@@ -598,13 +598,14 @@ rate_limit_us_store(struct gov_attr_set *attr_set, const char *buf, size_t count
 
 static struct governor_attr rate_limit_us = __ATTR_RW(rate_limit_us);
 
-static struct attribute *sugov_attributes[] = {
+static struct attribute *sugov_attrs[] = {
 	&rate_limit_us.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(sugov);
 
 static struct kobj_type sugov_tunables_ktype = {
-	.default_attrs = sugov_attributes,
+	.default_groups = sugov_groups,
 	.sysfs_ops = &governor_sysfs_ops,
 };