EXYNOS: Add SMDK5250 board support

SMDK5250 board is based on Samsungs EXYNOS5250 SoC.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
10 files changed