hwinfo: update meta information

pkgs/tools/system/hwinfo/default.nix

@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-u5EXU+BrTMeDbZAv8WyBTyFcZHdBIUMpJSLTYgf3Mo8=";
   };
 
-  patchPhase = ''
+  postPatch = ''
     # VERSION and changelog are usually generated using Git
     # unless HWINFO_VERSION is defined (see Makefile)
     export HWINFO_VERSION="${version}"
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Hardware detection tool from openSUSE";
-    license = licenses.gpl2;
+    license = licenses.gpl2Only;
     homepage = "https://github.com/openSUSE/hwinfo";
     maintainers = with maintainers; [ bobvanderlinden ];
     platforms = platforms.linux;