Test that the new port API functions all behave as expected, including
physical vs logical level for input and output as well as masked and
set-based output operations. Also tests the new pin API functions.
For running on real hardware this test now uses a local test-specific
devicetree binding. For build-only tests any platform with a GPIO
alias should be tested.
The new code increases flash requirements so add a filter to exclude
platforms that won't link.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>