Night Light: My first mainline driver

I have been daily driving postmarketOS on a OnePlus 6 since March 2024. I keep a list of the stuff which is not working , which helps me track the progress of the project through my personal experience. An entry of this list is: "Night light does not work", this is annoying when using the phone in the evening as it has a bright OLED screen. I&#x27;ve been following postmarketOS since 2019, but…