ARM: dts: Add HS400 support for exynos5422-odroidxu3

HS400 timing values are added for exynos5422-odroidxu3 board.

Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>