Merge tag 'samsung-dt-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk...

Merge "Samsung DeviceTree update for v4.9" from Krzysztof Kozlowski:

1. Set chosen serial bitrate which allows proper serial output when
   bootloader does pass all the data in command line.
2. Cleanup.

* tag 'samsung-dt-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: dts: exynos: Use 'hpd-gpios' instead of 'hpd-gpio'
  ARM: dts: exynos: Use stdout non-deprecated property and add serial options to Odroid XU/XU3/XU4