Merge patch series "test/py: gpio: cleanups and improvement"

David Lechner <dlechner@baylibre.com> says:

I wanted to do some quick tests to make sure gpios were working without
having to dig out a schematic. Which means I didn't want to set any GPIO
as an output first without checking. So the main point here is the last
patch which allows gpio_op_pin to be optional and skip the test instead
of failing with exception. This works similar to several other config
options that are already optional in this module.

I also noticed a few easy things to clean up while I was looking at the
file, so there are a couple of extra patches for that.

Link: https://lore.kernel.org/r/20260312-test-gpio-cleanup-v1-0-bcf549671eb1@baylibre.com