[PATCH v4 1/2] realtek: enable pca953x driver for rtl838x subtarget

[Sander Vanheule]

On Wed, 2022-03-09 at 23:30 +0900, INAGAKI Hiroshi wrote:
> The system status LED on Panasonic Switch-M8eG PN28080K is connected to
> a PCA9539PW. To use the LED as a status LED of OpenWrt while booting,
> enable the pca953x driver and built-in to the kernel.
> Also enable CONFIG_GPIO_PCA953X_IRQ to use interrupt via RTL83xx GPIO.
> 
> Signed-off-by: INAGAKI Hiroshi <musashino.open at gmail.com>

Acked-by: Sander Vanheule <sander at svanheule.net>