Merge tag 'at91-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/drivers

Pull "First batch of drivers for 3.19" from Nicolas Ferre:

It is only about a not so recent driver for old platforms: RTT as RTC driver:
- RTT as RTC driver enhancements and machine specific include files removal
- RTT as RTC driver conversion to device tree

* tag 'at91-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  rtc: at91sam9: add DT bindings documentation
  rtc: at91sam9: use clk API instead of relying on AT91_SLOW_CLOCK
  ARM: at91: add clk_lookup entry for RTT devices
  rtc: at91sam9: rework the Kconfig description
  rtc: at91sam9: make use of syscon/regmap to access GPBR registers
  rtc: at91sam9: add DT support
  rtc: at91sam9: replace devm_ioremap by devm_ioremap_resource
  rtc: at91sam9: use standard readl/writel functions instead of raw versions
  rtc: at91sam9: remove references to mach specific headers
Signed-off-by: Arnd Bergmann <arnd@arndb.de>