drm/rockchip: dw_hdmi_qp: Add platform ctrl callback

There are some control bits for IO and interrupts status scattered
across different GRF on differt SOC.
Add platform callback for this IO setting and interrupts status
handling.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20241231094425.253398-2-andyshrk@163.com