HDMI isn't probed on v5.15-rc1 on ULCB+KF

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

Hi Laurent

I noticed that ULCB+KF board on v5.15-rc1 doesn't probe HDMI.
I git-bisect:ed and found the first issue.
It re-start works for me if I reverted this commit.
Could you please check it ?

commit d0f44e0dac29aca3f85d238dfbcd2e52450b38dc
Author: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Date:   Mon May 25 07:05:26 2020 +0300

    drm: rcar-du: dw-hdmi: Set output port number
    
    Report the DT output port number in dw_hdmi_plat_data to connect to the
    next bridge in the dw-hdmi driver.
    
    Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
    Tested-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx> # On V3U
    Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>



Thank you for your help !!

Best regards
---
Kuninori Morimoto