valkyrie: add myself (pSub) as maintainer

pkgs/development/tools/analysis/valkyrie/default.nix

@@ -20,10 +20,11 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ qmake4Hook ];
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = http://www.valgrind.org/;
     description = "Qt4-based GUI for the Valgrind 3.6.x series";
-    license = stdenv.lib.licenses.gpl2;
-    platforms = stdenv.lib.platforms.linux;
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ pSub ];
   };
 }