since the related code was removed by:
commit 4d5a964f29
Author: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Tue Feb 23 18:04:13 2021 +0800
net: unify socket into file descriptor
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
interrupts.
This example uses the GPIO driver with the 3 on board LEDs outputs and one input
as an interrupt pin.
Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>