drm/i915/guc: Decode another GuC load failure case

Explain another potential firmware failure mode and early exit the
long wait if hit.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230502234007.1762014-2-John.C.Harrison@Intel.com