CHROMIUM: drm: rockchip/dw_hdmi-rockchip: refactor the mode table

CHROMIUM: drm: rockchip/dw_hdmi-rockchip: refactor the mode table

This cleanup will allow the following patch to implement slop easier.

25175000-40000000 and a few other ranges use the same settings.
And the rest of the driver already snaps to the next highest
frequency when it gets the settings. So this patch removes
a lot of the duplicates. It should be a noop change.

And frequencies within 0.1% should be close enough, let's redo
rockchip hdmi to allow slop.

Change-Id: Ic4865b2825de9b6c3b3e8d029066a8964e8ede6b
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>