Merge tag 'pwm/for-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry...

Pull pwm updates from Thierry Reding:
 "This contains two new drivers, one for Allwinner SoCs and the other
  for Imagination Technologies' Pistachio SoC.

  Complementing this are a couple of fixes to the Atmel HLCDC PWM and
  STi PWM drivers as well as minor cleanups to the core and the Tegra
  driver"

* tag 'pwm/for-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: tegra: Use NSEC_PER_SEC
  pwm: Remove unnecessary check before of_node_put()
  pwm: Add device tree binding document for IMG PWM DAC
  pwm: Imagination Technologies PWM DAC driver
  pwm: sti: Maintain a bitmap of configured devices
  pwm: sunxi: document OF bindings
  pwm: Add Allwinner SoC support
  pwm: atmel-hlcdc: Prevent division by zero
  pwm: atmel-hlcdc: Depend on HAVE_CLK