libdrm: use lib.availableOn instead of lib.meta.available

pkg.meta.available is deprecated (see subsequent commit which adds a
warning) and does not distinguish between the buildPlatform and the
hostPlatform.

pkgs/development/libraries/libdrm/default.nix

@@ -1,6 +1,6 @@
 { stdenv, lib, fetchurl, pkg-config, meson, ninja, docutils
 , libpthreadstubs, libpciaccess
-, withValgrind ? valgrind-light.meta.available, valgrind-light
+, withValgrind ? lib.meta.availableOn stdenv.hostPlatform valgrind-light, valgrind-light
 }:
 
 stdenv.mkDerivation rec {