Two minor tweaks and a semantics change:
- fix a whitespace nit
- use gpio_pin_configure_dt()
- turn the LED on in case the percentage is nonzero
The last change patterns this driver after behavior in the Android
lights HAL, which recommends analogous behavior when the user requests
a color change in a non-RGB LED:
Do your best here. [...] If you can only do on or off, 0 is off,
anything else is on.
https://source.android.com/reference/hal/structlight__state__t
I think this behavior makes more sense.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
