Pin control migration

In this article, there is a description of how to migrate a Nordic board to the new pin control regime using a python script on the dts file: developer.nordicsemi.com/.../ug_pinctrl.html

I'm using SDK version 2.2.0. Have the boards already been migrated in this SDK? If not, where should the new dtsi files go - in the SDK folders or in my application folders?

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