drm/i915: Annotate more of the BIOS fb takeover failure paths

Annotate a few more of the failure paths on the initial
BIOS fb takeover to avoid having to guess why things
aren't working the way we expect.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Tested-by: Paz Zcharya <pazz@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240202224340.30647-17-ville.syrjala@linux.intel.com