sh: sq: 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 sh sq sysfs code to use default_groups field which has
been the preferred way since aa30f47cf6 ("kobject: Add support for
default attribute groups to kobj_type") so that we can soon get rid of
the obsolete default_attrs field.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: linux-sh@vger.kernel.org
Tested-by: Rob Landley <rob@landley.net>
Link: https://lore.kernel.org/r/20220104162240.1309639-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/sh/kernel/cpu/sh4/sq.c

@@ -324,6 +324,7 @@ static struct attribute *sq_sysfs_attrs[] = {
 	&mapping_attr.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(sq_sysfs);
 
 static const struct sysfs_ops sq_sysfs_ops = {
 	.show	= sq_sysfs_show,
@@ -332,7 +333,7 @@ static const struct sysfs_ops sq_sysfs_ops = {
 
 static struct kobj_type ktype_percpu_entry = {
 	.sysfs_ops	= &sq_sysfs_ops,
-	.default_attrs	= sq_sysfs_attrs,
+	.default_groups	= sq_sysfs_groups,
 };
 
 static int sq_dev_add(struct device *dev, struct subsys_interface *sif)