libv4l: 1.12.3 -> 1.14.2

Semi-automatic update generated by https://github.com/ryantm/nix-update tools. These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 1.14.2 with grep in /nix/store/rbajjyaiyj3q7lxnxs1j3sn1j5x5qgpp-v4l-utils-1.14.2
- directory tree listing: https://gist.github.com/2bfaf54c93c6f29802c6049289a7bf94

pkgs/os-specific/linux/v4l-utils/default.nix

@@ -8,11 +8,11 @@
 
 stdenv.mkDerivation rec {
   name = "v4l-utils-${version}";
-  version = "1.12.3";
+  version = "1.14.2";
 
   src = fetchurl {
     url = "http://linuxtv.org/downloads/v4l-utils/${name}.tar.bz2";
-    sha256 = "0vpl3jl0x441y7b5cn7zhdsyi954hp9h2p30jhnr1zkx1rpxsiss";
+    sha256 = "14h6d2p3n4jmxhd8i0p1m5dbwz5vnpb3z88xqd9ghg15n7265fg6";
   };
 
   outputs = [ "out" "dev" ];