usb: typec: constify the struct device_type usage

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move all the
device_type variables in use by the driver to be constant structures as
well, placing it into read-only memory which can not be modified at
runtime.

Signed-off-by: Ricardo B. Marliere <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/typec/pd.c

···
 };
 __ATTRIBUTE_GROUPS(source_fixed_supply);
 
-static struct device_type source_fixed_supply_type = {
+static const struct device_type source_fixed_supply_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = source_fixed_supply_groups,
···
 };
 __ATTRIBUTE_GROUPS(sink_fixed_supply);
 
-static struct device_type sink_fixed_supply_type = {
+static const struct device_type sink_fixed_supply_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = sink_fixed_supply_groups,
···
 };
 ATTRIBUTE_GROUPS(source_variable_supply);
 
-static struct device_type source_variable_supply_type = {
+static const struct device_type source_variable_supply_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = source_variable_supply_groups,
···
 };
 ATTRIBUTE_GROUPS(sink_variable_supply);
 
-static struct device_type sink_variable_supply_type = {
+static const struct device_type sink_variable_supply_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = sink_variable_supply_groups,
···
 };
 ATTRIBUTE_GROUPS(source_battery);
 
-static struct device_type source_battery_type = {
+static const struct device_type source_battery_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = source_battery_groups,
···
 };
 ATTRIBUTE_GROUPS(sink_battery);
 
-static struct device_type sink_battery_type = {
+static const struct device_type sink_battery_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = sink_battery_groups,
···
 };
 ATTRIBUTE_GROUPS(source_pps);
 
-static struct device_type source_pps_type = {
+static const struct device_type source_pps_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = source_pps_groups,
···
 };
 ATTRIBUTE_GROUPS(sink_pps);
 
-static struct device_type sink_pps_type = {
+static const struct device_type sink_pps_type = {
 	.name = "pdo",
 	.release = pdo_release,
 	.groups = sink_pps_groups,
···
 	[APDO_TYPE_PPS]  = "programmable_supply",
 };
 
-static struct device_type *source_type[] = {
+static const struct device_type *source_type[] = {
 	[PDO_TYPE_FIXED] = &source_fixed_supply_type,
 	[PDO_TYPE_BATT]  = &source_battery_type,
 	[PDO_TYPE_VAR]   = &source_variable_supply_type,
 };
 
-static struct device_type *source_apdo_type[] = {
+static const struct device_type *source_apdo_type[] = {
 	[APDO_TYPE_PPS]  = &source_pps_type,
 };
 
-static struct device_type *sink_type[] = {
+static const struct device_type *sink_type[] = {
 	[PDO_TYPE_FIXED] = &sink_fixed_supply_type,
 	[PDO_TYPE_BATT]  = &sink_battery_type,
 	[PDO_TYPE_VAR]   = &sink_variable_supply_type,
 };
 
-static struct device_type *sink_apdo_type[] = {
+static const struct device_type *sink_apdo_type[] = {
 	[APDO_TYPE_PPS]  = &sink_pps_type,
 };
 
 /* REVISIT: Export when EPR_*_Capabilities need to be supported. */
 static int add_pdo(struct usb_power_delivery_capabilities *cap, u32 pdo, int position)
 {
-	struct device_type *type;
+	const struct device_type *type;
 	const char *name;
 	struct pdo *p;
 	int ret;
···
 	kfree(to_usb_power_delivery_capabilities(dev));
 }
 
-static struct device_type pd_capabilities_type = {
+static const struct device_type pd_capabilities_type = {
 	.name = "capabilities",
 	.release = pd_capabilities_release,
 };
···
 	kfree(pd);
 }
 
-static struct device_type pd_type = {
+static const struct device_type pd_type = {
 	.name = "usb_power_delivery",
 	.release = pd_release,
 	.groups = pd_groups,