platform/chrome: chromeos_laptop - factor out getting IRQ from DMI

	.flags		= I2C_CLIENT_WAKE,

};

static int chromeos_laptop_get_irq_from_dmi(const char *dmi_name)

{

	const struct dmi_device *dmi_dev;

	const struct dmi_dev_onboard *dev_data;

	dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, dmi_name, NULL);

	if (!dmi_dev) {

		pr_err("failed to find DMI device '%s'\n", dmi_name);

		return -ENOENT;

	}

	dev_data = dmi_dev->device_data;

	if (!dev_data) {

		pr_err("failed to get data from DMI for '%s'\n", dmi_name);

		return -EINVAL;

	}

	return dev_data->instance;

}

static struct i2c_client *__add_probed_i2c_device(

		const char *name,

		int bus,

		struct i2c_board_info *info,

		const unsigned short *alt_addr_list)

{

	const struct dmi_device *dmi_dev;

	const struct dmi_dev_onboard *dev_data;

	struct i2c_adapter *adapter;

	struct i2c_client *client = NULL;

	const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END };

	if (bus < 0)

		return NULL;

	/*

	 * If a name is specified, look for irq platform information stashed

	 * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware.

	 */

	if (name) {

		dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL);

		if (!dmi_dev) {

			pr_err("failed to dmi find device %s\n", name);

		info->irq = chromeos_laptop_get_irq_from_dmi(name);

		if (info->irq < 0)

			return NULL;

	}

		dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data;

		if (!dev_data) {

			pr_err("failed to get data from dmi for %s\n", name);

			return NULL;

		}

		info->irq = dev_data->instance;

	}

	adapter = i2c_get_adapter(bus);

	if (!adapter) {