kbuild: fix ld-version.sh to not be affected by locale

kbuild: fix ld-version.sh to not be affected by locale

ld-version.sh checks the output from $(LD) --version, but it has a
problem on some locales.

For example, in Italian:

  $ LC_MESSAGES=it_IT.UTF-8 ld --version | head -n 1
  ld di GNU (GNU Binutils for Debian) 2.35.2

This makes ld-version.sh fail because it expects "GNU ld" for the
BFD linker case.

Add LC_ALL=C to override the user's locale.

BTW, setting LC_MESSAGES=C (or LANG=C) is not enough because it is
ineffective if LC_ALL is set on the user's environment.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=212105
Reported-by: Marco Scardovi
Reported-by: Andy Shevchenko <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
Recensito-da: Nick Desaulniers <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>