This is a followup to commit 95b969bc9cde419e9cfcf4299a7524381ae7a64d. * gnu/packages/aux-files/linux-libre/4.14-x86_64.conf, gnu/packages/aux-files/linux-libre/4.14-i686.conf: Adapt to the configuration options being renamed from CONFIG_*_UNWINDER to CONFIG_UNWINDER_* in version 4.14.9.