drm/amdkfd: 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 amdkfd 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.

Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_process.c

@@ -461,6 +461,7 @@ static struct attribute *procfs_queue_attrs[] = {
 	&attr_queue_gpuid,
 	NULL
 };
+ATTRIBUTE_GROUPS(procfs_queue);
 
 static const struct sysfs_ops procfs_queue_ops = {
 	.show = kfd_procfs_queue_show,
@@ -468,7 +469,7 @@ static const struct sysfs_ops procfs_queue_ops = {
 
 static struct kobj_type procfs_queue_type = {
 	.sysfs_ops = &procfs_queue_ops,
-	.default_attrs = procfs_queue_attrs,
+	.default_groups = procfs_queue_groups,
 };
 
 static const struct sysfs_ops procfs_stats_ops = {