Update documentation to include reference information for newly supported 2nd generation Renesas digital multiphase voltage regulators. Also update branding from Intersil to Renesas. Signed-off-by: Grant Peltier <grantpeltier93@gmail.com> Link: https://lore.kernel.org/r/1588e5e89d6a9623464036cf8fbdb9b18785894b.1584720563.git.grantpeltier93@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>