linux-phytec-ti

drm/exynos/decon5433: reset decon on start

Resetting IP at starting ensures that DECON will be in known state
regardless of changes by bootloader.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>