Merge tag 'samsung-dt-1' into for-next

Merge tag 'samsung-dt-1' into for-next

Samsung DT updates for v4.4

- New board support
  : add exynos5250-snow-rev5 DT file to support Snow Rev5+ board
  : add exynos5422-odroidxu4 DT file to support Odroid XU4 board
  : split exynos5422-odroidxu3-audio DT file from odroidxu3-common

- USE GPIO constants for flags cells for exynos boards
- fix cpu compatible value to 'arm926ej-s' for s3c2416

- add DMA support for serial ports for exynos4
- add suspend opp for exynos4412
- remove regulator-compatible usage for exynos4412-trats2

- enable EC vboot context support for Peach boards
- move display-timings node to DP for exynos5250-arndale, smdk5250 and smdk5420

- for exynos4412-odroid/odroidu3
  : unify voltage regulator style and
  : remove redundant pinctrl settings
  : add pwm-fan node and use it as a colling device

- for exynos5422-odroidxu3
  : fix power off method and LEDs

- dt-bindings
  : grounded AC0KB pin on S2MPS11
  : entry how to use PWM FAN as a cooling device