Declare that VBT block 252 is the "int15 hook". This is some
VBIOS only juju so don't bother with a full definition.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-35-ville.syrjala@linux.intel.comAcked-by: Jani Nikula <jani.nikula@intel.com>