gnu: Add linux-libre 5.15.5.

* gnu/packages/linux.scm (linux-libre-5.15-version,
linux-libre-5.15-gnu-revision, deblob-scripts-5.15,
linux-libre-5.15-pristine-source, linux-libre-5.15-source,
linux-libre-headers-5.15, linux-libre-5.15): New variables.
* gnu/packages/aux-files/linux-libre/5.15-arm.conf,
gnu/packages/aux-files/linux-libre/5.15-arm64.conf,
gnu/packages/aux-files/linux-libre/5.15-i686.conf,
gnu/packages/aux-files/linux-libre/5.15-x86_64.conf: New files.
* Makefile.am (AUX_FILES): Add them

Makefile.am

@@ -376,6 +376,10 @@ AUX_FILES =						\
   gnu/packages/aux-files/chromium/master-preferences.json		\
   gnu/packages/aux-files/emacs/guix-emacs.el		\
   gnu/packages/aux-files/guix.vim			\
+  gnu/packages/aux-files/linux-libre/5.15-arm.conf	\
+  gnu/packages/aux-files/linux-libre/5.15-arm64.conf	\
+  gnu/packages/aux-files/linux-libre/5.15-i686.conf	\
+  gnu/packages/aux-files/linux-libre/5.15-x86_64.conf	\
   gnu/packages/aux-files/linux-libre/5.14-arm.conf	\
   gnu/packages/aux-files/linux-libre/5.14-arm64.conf	\
   gnu/packages/aux-files/linux-libre/5.14-i686.conf	\

gnu/packages/linux.scm

@@ -348,6 +348,21 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
 
 ;; The current "stable" kernels. That is, the most recently released major
 ;; versions that are still supported upstream.
+(define-public linux-libre-5.15-version "5.15.5")
+(define-public linux-libre-5.15-gnu-revision "gnu")
+(define deblob-scripts-5.15
+  (linux-libre-deblob-scripts
+   linux-libre-5.15-version
+   linux-libre-5.15-gnu-revision
+   (base32 "1rfhwfzifmbpnrhmrn3srm736nkm1v6affw915d0fgqzqgi8qfai")
+   (base32 "04fj1x3zmi310cr3m9hxpi26gdcmwfsqciv5yb6q6rrnqjqs1pc0")))
+(define-public linux-libre-5.15-pristine-source
+  (let ((version linux-libre-5.15-version)
+        (hash (base32 "07w5k2y5hk6ys19zgg3x21g6im9x0pwk5f6f8b0q3b152lq5lmp9")))
+   (make-linux-libre-source version
+                            (%upstream-linux-source version hash)
+                            deblob-scripts-5.15)))
+
 (define-public linux-libre-5.14-version "5.14.21")
 (define-public linux-libre-5.14-gnu-revision "gnu")
 (define deblob-scripts-5.14
@@ -484,6 +499,11 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
     (patches (append (origin-patches source)
                      patches))))
 
+(define-public linux-libre-5.15-source
+  (source-with-patches linux-libre-5.15-pristine-source
+                       (list %boot-logo-patch
+                             %linux-libre-arm-export-__sync_icache_dcache-patch)))
+
 (define-public linux-libre-5.14-source
   (source-with-patches linux-libre-5.14-pristine-source
                        (list %boot-logo-patch
@@ -596,6 +616,11 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
     (description "Headers of the Linux-Libre kernel.")
     (license license:gpl2)))
 
+(define-public linux-libre-headers-5.15
+  (make-linux-libre-headers* linux-libre-5.15-version
+                             linux-libre-5.15-gnu-revision
+                             linux-libre-5.15-source))
+
 (define-public linux-libre-headers-5.14
   (make-linux-libre-headers* linux-libre-5.14-version
                              linux-libre-5.14-gnu-revision
@@ -902,6 +927,13 @@ It has been modified to remove all non-free binary blobs.")
 ;;; Generic kernel packages.
 ;;;
 
+(define-public linux-libre-5.15
+  (make-linux-libre* linux-libre-5.15-version
+                     linux-libre-5.15-gnu-revision
+                     linux-libre-5.15-source
+                     '("x86_64-linux" "i686-linux" "armhf-linux" "aarch64-linux" "riscv64-linux")
+                     #:configuration-file kernel-config))
+
 (define-public linux-libre-5.14
   (make-linux-libre* linux-libre-5.14-version
                      linux-libre-5.14-gnu-revision