As started by commit 05a5f51c ("Documentation: Replace lkml.org
links with lore"), replace lkml.org links with lore to better use a
single source that's more likely to stay available long-term.
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NVineet Gupta <vineetg@rivosinc.com>