drm/i915: Nuke buf_trans hdmi functions

All the foo_get_buf_trans_hdmi() functions just return a single table.
Remove the pointless wrappers.

v2: Handle adl-p

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210608073603.2408-17-ville.syrjala@linux.intel.com


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