ish-pm: support GPIO both edge interrupt

[lifenggitacc]

Change-Id: I471a20c61fa2d3085e96e901af6afc6be72a77be

ISH by its design doesn't support interrupt configuration both edge trigger; if configure both edge, in lower power mode, ISH will enter then exit LPM immediately. This causes insufficient LPM residency.
However in Chrome project, some GPIO pins have to support both edge interrupt. To keep LPM function intact and also meet the requirements of Chrome project, we provide this alternative solutions. In general, before entering LPM, reconfigure interrupt with single edge, which is the expected next triggering edge; after exit from LPM, restore original value.
Originally this was implemented in Chrome WHL ECOS ISH project; link is here: https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/main/chip/ish/power_mgt.c#299

[likongintel]

There are 2 concerns from hebo
• License:
o Both Chrome EC and Intel SEDI used BSD license, I think overall should have no problem, but Chrome EC license file mentioned:

Maybe we need include ChromiumOS’s license notice also.

• GPIO Groups (or Ports)：
o ISH5.8 has two GPIO groups, this code (original based on ISH5.0, only have single group) only handled the first group, if user used pins from the second group, then will have problem, we need implement for both groups as a complete solution.

[lifenggitacc]

Thanks. Agree a complete solution should be implemented to support newer ISH verison.