Merge tag 'regmap-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "After several quiet kernel releases we've got a couple of new features
  in regmap, support for using hwspinlocks as the lock for the internal
  data structures and a helper for polling on regmap_fields. The Kconfig
  dependencies on hwspinlocks were annoyingly difficult to squash
  between things behaving surprisingly and randconfig, I could've
  squashed those commits down but might've have caused hassle with other
  trees trying to use the new support.

   - support for using a hwspinlock to protect the regmap

   - an iopoll style helper for regmap_field"

* tag 'regmap-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Fix unused warning
  regmap: Try to work around Kconfig exploding on HWSPINLOCK
  regmap: Clean up hwspinlock on regmap exit
  regmap: Also protect hwspinlock in error handling path
  regmap: Add a config option for hwspinlock
  regmap: Add hardware spinlock support
  regmap: avoid -Wint-in-bool-context warning
  regmap: add iopoll-like polling macro for regmap_field
  regmap: constify regmap_bus structures
  regmap: Avoid namespace collision within macro & tidy up

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