gnu: linux-libre: Update to 5.9.1.

gnu: linux-libre: Update to 5.9.1.

* gnu/packages/aux-files/linux-libre/5.8-arm.conf,
gnu/packages/aux-files/linux-libre/5.8-arm64.conf,
gnu/packages/aux-files/linux-libre/5.8-i686.conf,
gnu/packages/aux-files/linux-libre/5.8-x86_64.conf: Delete files.
* gnu/packages/aux-files/linux-libre/5.9-arm.conf,
gnu/packages/aux-files/linux-libre/5.9-arm64.conf,
gnu/packages/aux-files/linux-libre/5.9-i686.conf,
gnu/packages/aux-files/linux-libre/5.9-x86_64.conf: New files.
* Makefile.am (AUX_FILES): Adjust accordingly.
* gnu/packages/linux.scm (linux-libre-5.8-version, deblob-scripts-5.8,
linux-libre-5.8-pristine-source, linux-libre-5.8-source,
linux-libre-headers-5.8, linux-libre-5.8): Remove variables.
(linux-libre-5.9-version, deblob-scripts-5.9, linux-libre-5.9-pristine-source,
linux-libre-5.9-source, linux-libre-headers-5.9, linux-libre-5.9): New
variables.
(linux-libre-version, linux-libre-pristine-source, linux-libre-source,
linux-libre): Point to linux-libre-5.9*.
(linux-libre-with-bpf): Use linux-libre-5.9.