[PATCH v1 0/4] pseries-wdt: initial support for PAPR virtual watchdog timers

[Scott Cheloha <cheloha@xxxxxxxxxxxxx>]

This series is preceded by two RFCs:

RFC v1: https://lore.kernel.org/linux-watchdog/20220413165104.179144-1-cheloha@xxxxxxxxxxxxx/
RFC v2: https://lore.kernel.org/linux-watchdog/20220509174357.5448-1-cheloha@xxxxxxxxxxxxx/

Changes of note from RFC v2:

- Separate platform device registration in pseries/setup.c into a
  separate patch to avoid cross-subsystem patches.

- Change the "action" module parameter to use integers instead of
  strings.

- Add a proper .get method, action_get(), for reading the "action"
  module parameter value.

- Document pseries-wdt module parameters in watchdog-parameters.rst.

- Correct many checkpatch.pl warnings.

- For now, assume there is only one pseries-wdt device and always
  assign it watchdogNumber 1.