In Apalis eval board LTC2954 chip functioning?

When the apalis eval board is ON znd the Push button is pressed , The Interrupt command(INT) is generated by ltc 2954 to uP iMX6 then the uP drives the KILL pin low to shutdown the system. But when the device tree files we can’t see the GPIO pin interrupt in the .dts, .dtsi files. Please clarify on this or my understanding is wrong ?

https://developer.toradex.com/knowledge-base/gpio-(linux)#GPIO_PowerOff