gnu: linux-libre: Update to 4.18.9.

* gnu/packages/linux.scm (%linux-libre-version): Update to 4.18.9.
(%linux-libre-hash): Update hash.

gnu/packages/linux.scm

@@ -405,8 +405,8 @@ (define %linux-compatible-systems '("x86_64-linux" "i686-linux" "armhf-linux" "a
 ;; supports qemu "virt" machine and possibly a large number of ARM boards.
 ;; See : https://wiki.debian.org/DebianKernel/ARMMP.
 
-(define %linux-libre-version "4.18.8")
-(define %linux-libre-hash "163awpba1yd0x33xzj5dczimk4y96xc28syc4w2ad0qafgapng8l")
+(define %linux-libre-version "4.18.9")
+(define %linux-libre-hash "0wwmhnfvcsdlqhzwwwyz1x5a3ldjky6l0xir1pi6pysr0lak402x")
 
 (define %linux-libre-4.18-patches
   (list %boot-logo-patch