ARM: dts: Add device tree node for DP controller for exynos5250

Add device tree node for DP controller in EXYNOS5250 and
enable the instance for the SMDK5250 board.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2 files changed