platform/x86/intel/wmi: thunderbolt: Use dev_groups callback

Use .dev_groups callback instead of manual sysfs registration.
Remove .probe and .remove callbacks as they become dummy after
using .dev_groups.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220927135612.1602491-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/intel/wmi/thunderbolt.c

@@ -51,26 +51,7 @@ static struct attribute *tbt_attrs[] = {
 	&dev_attr_force_power.attr,
 	NULL
 };
-
+ATTRIBUTE_GROUPS(tbt);
-static const struct attribute_group tbt_attribute_group = {
-	.attrs = tbt_attrs,
-};
-
-static int intel_wmi_thunderbolt_probe(struct wmi_device *wdev,
-				       const void *context)
-{
-	int ret;
-
-	ret = sysfs_create_group(&wdev->dev.kobj, &tbt_attribute_group);
-	kobject_uevent(&wdev->dev.kobj, KOBJ_CHANGE);
-	return ret;
-}
-
-static void intel_wmi_thunderbolt_remove(struct wmi_device *wdev)
-{
-	sysfs_remove_group(&wdev->dev.kobj, &tbt_attribute_group);
-	kobject_uevent(&wdev->dev.kobj, KOBJ_CHANGE);
-}
 
 static const struct wmi_device_id intel_wmi_thunderbolt_id_table[] = {
 	{ .guid_string = INTEL_WMI_THUNDERBOLT_GUID },
@@ -80,9 +61,8 @@ static const struct wmi_device_id intel_wmi_thunderbolt_id_table[] = {
 static struct wmi_driver intel_wmi_thunderbolt_driver = {
 	.driver = {
 		.name = "intel-wmi-thunderbolt",
+		.dev_groups = tbt_groups,
 	},
-	.probe = intel_wmi_thunderbolt_probe,
-	.remove = intel_wmi_thunderbolt_remove,
 	.id_table = intel_wmi_thunderbolt_id_table,
 };