drm/exynos: simplify set_pixfmt() in DECON and FIMD drivers

DRM core already checks the validity of the pixelformat.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
3 files changed