Add board overlays to execute the comparator gpio_loopback testsuite on
xg24_dk2601b and xg29_rb4412a. The testsuite was executed and was seen
to pass on both boards locally with twister.
Signed-off-by: Christian Galante <christian.galante@silabs.com>
Add test suite which uses GPIO loopback to produce a "very low" and
"very high" voltage at the positive input of the comparator using the
output of a GPIO. The negative input is set to a voltage between the
high and low output voltages of the GPIO using whichever internal
reference is available to the comparator.
Signed-off-by: Bjarki Arge Andreasen <bjarki.andreasen@nordicsemi.no>
