First batch of DT changes for 4.5:
- addition of nodes for sama5d2 & sama5d4
- some fixes for i2c hold time, compatible stings
- addition of a new patform by DENX: the MA5D4 SoM and EVK

* tag 'at91-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91/dt: sama5d2 Xplained: pmic needs a specific sda hold time
  ARM: at91/dt: sama5d4: update i2c compatible string
  ARM: at91/dt: sama5d4 master clock can run at 200MHz now
  ARM: at91/dt: sama5d2: add watchdog node
  ARM: at91/dt: sama5d4: Add support for DENX MA5D4 SoM and EVK
  ARM: at91/dt: sama5d4: Add pinmux for 8-bit MMC0 bus
  ARM: at91/dt: sama5d4: Fix mmc0 pinmux comments
Signed-off-by: Olof Johansson <olof@lixom.net>