x86-boot-2023-02-20

 - Robustify/fix calling startup_{32,64}() from the decompressor code,
   and removing x86 quirk from scripts/head-object-list.txt as
   a result.

 - Do not register processors that cannot be onlined for x2APIC

Signed-off-by: Ingo Molnar <mingo@kernel.org>