f2fs: replace ktype default_attrs with default_groups

The kobj_type default_attrs field is being replaced by the
default_groups field. Replace the default_attrs fields in f2fs_sb_ktype
and f2fs_feat_ktype with default_groups. Use the ATTRIBUTE_GROUPS macro
to create f2fs_groups and f2fs_feat_groups.

Signed-off-by: Kimberly Brown <[e-mail]>
Reviewed-by: Chao Yu <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

fs/f2fs/sysfs.c

···
 	ATTR_LIST(current_reserved_blocks),
 	NULL,
 };
+ATTRIBUTE_GROUPS(f2fs);
 
 static struct attribute *f2fs_feat_attrs[] = {
 #ifdef CONFIG_FS_ENCRYPTION
···
 	ATTR_LIST(sb_checksum),
 	NULL,
 };
+ATTRIBUTE_GROUPS(f2fs_feat);
 
 static const struct sysfs_ops f2fs_attr_ops = {
 	.show	= f2fs_attr_show,
···
 };
 
 static struct kobj_type f2fs_sb_ktype = {
-	.default_attrs	= f2fs_attrs,
+	.default_groups = f2fs_groups,
 	.sysfs_ops	= &f2fs_attr_ops,
 	.release	= f2fs_sb_release,
 };
···
 };
 
 static struct kobj_type f2fs_feat_ktype = {
-	.default_attrs	= f2fs_feat_attrs,
+	.default_groups = f2fs_feat_groups,
 	.sysfs_ops	= &f2fs_attr_ops,
 };