drm/exynos: added vp scaling feature for hdmi
This patch adds vp scaling feature for exynos hdmi. Scaling ratio between source and destination is used for width and height. Also meaningless variables to set registers are cleaned. Signed-off-by: NSeung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NInki Dae <inki.dae@samsung.com>
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