Merge branch 'bpf-live-registers-computation-with-gotox'

Anton Protopopov says:

====================
bpf: Live registers computation with gotox

While adding a selftest for live registers computation with gotox,
I've noticed that the code is actually incomplete. Namely, the
destination register rX in `gotox rX` wasn't actually considered
as used. Fix this and add a selftest.

v1 -> v2:
  * only enable the new selftest on x86 and arm64

v1: https://lore.kernel.org/bpf/20260114113314.32649-1-a.s.protopopov@gmail.com/T/#t
====================

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260114162544.83253-1-a.s.protopopov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>