gnu: Add linux-libre-4.1.

* gnu/packages/linux-libre-4.1-i686.conf,
  gnu/packages/linux-libre-4.1-x86_64.conf: New files.
* Makefile.am (KCONFIGS): Add them.
* gnu/packages/linux.scm (linux-libre-4.1): New variable.

Makefile.am

@@ -3,6 +3,7 @@
 # Copyright © 2013 Andreas Enge <andreas@enge.fr>
 # Copyright © 2015 Alex Kost <alezost@gmail.com>
 # Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
+# Copyright © 2016 Mark H Weaver <mhw@netris.org>
 #
 # This file is part of GNU Guix.
 #
@@ -168,7 +169,9 @@ dist_noinst_DATA = guix/tests.scm
 # Linux-Libre configurations.
 KCONFIGS =					\
   gnu/packages/linux-libre-i686.conf		\
-  gnu/packages/linux-libre-x86_64.conf
+  gnu/packages/linux-libre-x86_64.conf		\
+  gnu/packages/linux-libre-4.1-i686.conf	\
+  gnu/packages/linux-libre-4.1-x86_64.conf
 
 # Templates, examples.
 EXAMPLES =					\

gnu/packages/linux.scm

@@ -66,6 +66,7 @@
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system python)
   #:use-module (guix build-system trivial)
+  #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-2)
   #:use-module (srfi srfi-26)
   #:use-module (ice-9 match))
@@ -339,6 +340,23 @@ It has been modified to remove all non-free binary blobs.")
               (base32
                "13ar9sghm2g5w2km9x2d07q3lh81rz286d6slklv56qanm24chzx"))))))
 
+(define-public linux-libre-4.1
+  (package
+    (inherit linux-libre)
+    (version "4.1.17")
+    (source (origin
+              (method url-fetch)
+              (uri (linux-libre-urls version))
+              (sha256
+               (base32
+                "0mkvj5sab8l2k0mgfca3y4n5g9cxs3px0ysvdwa2zwl52n7dsfk4"))))
+    (native-inputs
+     (let ((conf (kernel-config (or (%current-target-system)
+                                    (%current-system))
+                                #:variant "4.1")))
+       `(,@(alist-delete "kconfig" (package-native-inputs linux-libre))
+         ("kconfig" ,conf))))))
+
 
 ;;;
 ;;; Pluggable authentication modules (PAM).