gnu: linux-libre: Update to 5.2.
* gnu/packages/linux.scm (%linux-libre-version): Update to 5.2.
(%linux-libre-hash): Update hash.
* linux-libre-5.1: Rename to ...
* linux-libre-5.2: ... this. Use %linux-libre-5.2-patches.
* linux-libre: Switch to linux-libre-5.2.
* linux-libre-arm-veyron, linux-libre-arm-generic, linux-libre-arm-omap2plus:
Use %linux-libre-5.2-patches.
* linux-libre-headers-5.1: Rename to ...
* linux-libre-headers-5.2: ... this.
* %linux-libre-5.1-patches: Rename to ...
* %linux-libre-5.2-patches: ... this.
* gnu/packages/aux-files/linux-libre/5.1-arm-veyron.conf,
gnu/packages/aux-files/linux-libre/5.1-arm.conf,
gnu/packages/aux-files/linux-libre/5.1-arm64.conf,
gnu/packages/aux-files/linux-libre/5.1-i686.conf,
gnu/packages/aux-files/linux-libre/5.1-x86_64.conf: Delete files.
* gnu/packages/aux-files/linux-libre/5.2-arm-veyron.conf,
gnu/packages/aux-files/linux-libre/5.2-arm.conf,
gnu/packages/aux-files/linux-libre/5.2-arm64.conf,
gnu/packages/aux-files/linux-libre/5.2-i686.conf,
gnu/packages/aux-files/linux-libre/5.2-x86_64.conf: New files.
* Makefile.am (AUX_FILES): Update accordingly.
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