leds: simatic-ipc-leds-gpio: Add support for module BX-59A

This is used for the Siemens Simatic IPC BX-59A, which has its LEDs
connected to GPIOs provided by the Nuvoton NCT6126D.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Xing Tong Wu <xingtong.wu@siemens.com>
Link: https://lore.kernel.org/r/20240314070506.2384-1-xingtong_wu@163.com
Signed-off-by: Lee Jones <lee@kernel.org>
2 files changed