gnu: linux-libre: Deblob the linux-libre source tarball ourselves.

gnu: linux-libre: Deblob the linux-libre source tarball ourselves.

* gnu/packages/linux.scm (linux-libre-deblob-scripts, deblob-scripts-5.2)
(deblob-scripts-4.19, deblob-scripts-4.14, deblob-scripts-4.9)
(deblob-scripts-4.4, computed-origin-method, %upstream-linux-source)
(source-with-patches, make-linux-libre-source, linux-libre-5.2-version)
(linux-libre-5.2-pristine-source, linux-libre-5.2-source)
(linux-libre-4.19-pristine-source, linux-libre-4.19-source)
(linux-libre-4.14-pristine-source, linux-libre-4.14-source)
(linux-libre-4.9-pristine-source, linux-libre-4.9-source)
(linux-libre-4.4-pristine-source, linux-libre-4.4-source)
(linux-libre-pristine-source, linux-libre-source)
(linux-libre-headers-4.9, linux-libre-headers-4.4)
(make-linux-libre-headers*, make-linux-libre*): New variables.
(%linux-libre-version): Rename to ...
(linux-libre-version): ... this, and make it equal to linux-libre-5.2-version.
(%linux-libre-4.19-version, %linux-libre-4.14-version)
(%linux-libre-4.9-version, %linux-libre-4.4-version): Rename to ...
(linux-libre-4.19-version, linux-libre-4.14-version)
(linux-libre-4.9-version, linux-libre-4.4-version): ... these.
(%linux-libre-4.19-hash, %linux-libre-4.19-patches)
(%linux-libre-4.14-hash, %linux-libre-4.14-patches)
(%linux-libre-hash, %linux-libre-5.2-patches): Remove variables.
(make-linux-libre-headers, make-linux-libre): Reformulate in terms of
make-linux-libre-headers* and make-linux-libre*, respectively.
(linux-libre-5.2, linux-libre-4.19, linux-libre-4.14, linux-libre-4.9)
(linux-libre-4.4, linux-libre-arm-veyron, linux-libre-arm-generic)
(linux-libre-arm-generic-4.19, linux-libre-arm-generic-4.14)
(linux-libre-arm-omap2plus, linux-libre-arm-omap2plus-4.19)
(linux-libre-arm-omap2plus-4.14): Adapt and use make-linux-libre*.
(linux-libre-headers-5.2, linux-libre-headers-4.19)
(linux-libre-headers-4.14): Adapt and use make-linux-libre-headers*.