input: gpio_keys: fix suspend race condition

Change the suspend/resume code to ensure that the interrupt are disabled
before changing the pin configuration. The current sequence has been
reported to cause spurious readouts on some platforms, this takes the
existing code and duplicates for the suspend and resume case, but swaps
the interrupt disable and configure for the suspend case.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>