drm/amdgpu: make kobj_type structures constant

Since commit ee6d3dd4 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definitions to prevent
modification at runtime.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -705,7 +705,7 @@ static void ip_hw_instance_release(struct kobject *kobj)
 	kfree(ip_hw_instance);
 }
 
-static struct kobj_type ip_hw_instance_ktype = {
+static const struct kobj_type ip_hw_instance_ktype = {
 	.release = ip_hw_instance_release,
 	.sysfs_ops = &ip_hw_instance_sysfs_ops,
 	.default_groups = ip_hw_instance_groups,
@@ -724,7 +724,7 @@ static void ip_hw_id_release(struct kobject *kobj)
 	kfree(ip_hw_id);
 }
 
-static struct kobj_type ip_hw_id_ktype = {
+static const struct kobj_type ip_hw_id_ktype = {
 	.release = ip_hw_id_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };
@@ -787,18 +787,18 @@ static const struct sysfs_ops ip_die_entry_sysfs_ops = {
 	.show = ip_die_entry_attr_show,
 };
 
-static struct kobj_type ip_die_entry_ktype = {
+static const struct kobj_type ip_die_entry_ktype = {
 	.release = ip_die_entry_release,
 	.sysfs_ops = &ip_die_entry_sysfs_ops,
 	.default_groups = ip_die_entry_groups,
 };
 
-static struct kobj_type die_kobj_ktype = {
+static const struct kobj_type die_kobj_ktype = {
 	.release = die_kobj_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };
 
-static struct kobj_type ip_discovery_ktype = {
+static const struct kobj_type ip_discovery_ktype = {
 	.release = ip_disc_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };

drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c

@@ -308,7 +308,7 @@ static const struct sysfs_ops amdgpu_xgmi_hive_ops = {
 	.show = amdgpu_xgmi_show_attrs,
 };
 
-struct kobj_type amdgpu_xgmi_hive_type = {
+static const struct kobj_type amdgpu_xgmi_hive_type = {
 	.release = amdgpu_xgmi_hive_release,
 	.sysfs_ops = &amdgpu_xgmi_hive_ops,
 	.default_groups = amdgpu_xgmi_hive_groups,