drm/i915/bios: fix printk format width

drm/i915/bios: fix printk format width

s/0x04%x/0x%04x/ to use 0 prefixed width 4 instead of printing 04
verbatim.

Fixes: 51f5748179d4 ("drm/i915/bios: create fake child devices on missing VBT")
Cc: stable@vger.kernel.org # v5.13+
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240905112519.4186408-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 54df34c5a2439b481f066476e67bfa21a0a640e5)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>