There's no real reason not to do this. The status quo is wrong for when
we're doing multilib 32-bit builds on x86, and we already have to undo
this on musl because its handling for TEXTRELs is limited (see bug #707660).
(I noted my intention to do this in 80a72bac2350811712c018b68f61a031736c579f
a
Patch from https://github.com/gentoo/gentoo/pull/33850
Note that we only have this problem here, and not in linux-mod-r1.eclass
or secureboot.eclass, because in the latter two eclasses the signing is
done in src_install while the kernel build system requires the key in
src_compile. src_install
