prl-tools: use kernel.moduleBuildDependencies instead of libelf

pkgs/os-specific/linux/prl-tools/default.nix

···
   hardeningDisable = [ "pic" "format" ];
 
   # also maybe python2 to generate xorg.conf
-  nativeBuildInputs = [ p7zip undmg libelf ] ++ lib.optionals (!libsOnly) [ makeWrapper ];
+  nativeBuildInputs = [ p7zip undmg ] ++ lib.optionals (!libsOnly) [ makeWrapper ] ++ kernel.moduleBuildDependencies;
 
   inherit libsOnly;