Modify tests that make use of gpio_op_pin from env__gpio_dev_config to
be skipped if gpio_op_pin is not provided. This is useful in cases where
one might not be sure which GPIOs are safe to use as outputs that can be
toggled without causing problems.
Signed-off-by: David Lechner <dlechner@baylibre.com>
0f101dac8f