drm/hisilicon/hibmc: convert to struct drm_edid

Prefer the struct drm_edid based functions for reading the EDID and
updating the connector.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/386e3a64efbdd61c3eaed3f49ea9c3ebd4fcd41d.1715691257.git.jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>