According to IC designer:
For RGB screen: The data-sync should enabled to get better SI.
For MCU screen: The data-sync must bypassed, otherwise the mcu signal
can't output.
Because we use much more rgb screen than MCU screen, so it's better
to enable data-sync by default. And for MCU screen, add the
data-sync-bypass property to bypass data-sync.
Fixes: c8f3ab90c0 ("drm/rockchip: rgb: Allow to configure data sync from DT")
Change-Id: Iacb0f7813ea038a210c2bbb88126356381509bf6
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
