Pull watchdog updates from Wim Van Sebroeck:

 - Add Armada 37xx CPU watchdog

 - w83627hf_wdt: Add Support for NCT6796D, NCT6797D, NCT6798D

 - hpwdt: several improvements

 - renesas_wdt: SPDX identifiers, stop when unregistering, support for
   R7S9210

 - rza_wdt: SPDX identifiers, support longer timeouts

 - core: fix null pointer dereference when releasing cdev

 - iTCO_wdt: Drop option vendorsupport=2

 - sama5d4: fix timeout-sec usage

 - lantiq_wdt: convert to watchdog framework

 - several small fixes

* tag 'linux-watchdog-4.20-rc1' of git://www.linux-watchdog.org/linux-watchdog: (30 commits)
  watchdog: ts4800: release syscon device node in ts4800_wdt_probe()
  watchdog: armada_37xx_wdt: use do_div for u64 division
  documentation: watchdog: add documentation for armada-37xx-wdt
  dt-bindings: watchdog: Document armada-37xx-wdt binding
  watchdog: Add support for Armada 37xx CPU watchdog
  dt-bindings: watchdog: add mpc8xxx-wdt support
  watchdog: mpc8xxx: provide boot status
  MAINTAINERS: Fix file pattern for MEN Z069 watchdog driver
  dt-bindings: watchdog: renesas-wdt: Add support for R7S9210
  watchdog: rza_wdt: Support longer timeouts
  watchdog: hpwdt: Disable PreTimeout when Timeout is smaller
  watchdog: w83627hf_wdt: Support NCT6796D, NCT6797D, NCT6798D
  watchdog: mpc8xxx: use dev_xxxx() instead of pr_xxxx()
  watchdog: lantiq: add get_timeleft callback
  watchdog: lantiq: Convert to watchdog_device
  watchdog: lantiq: update register names to better match spec
  watchdog: sama5d4: fix timeout-sec usage
  watchdog: fix a small number of "watchog" typos in comments
  watchdog: rza_wdt: convert to SPDX identifiers
  watchdog: iTCO_wdt: Remove unused hooks
  ...