uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/os-specific/linux/psftools/default.nix

@@ -0,0 +1,24 @@
+{ lib, stdenv, fetchurl }:
+stdenv.mkDerivation rec {
+  pname = "psftools";
+  version = "1.1.1";
+  src = fetchurl {
+    url = "https://www.seasip.info/Unix/PSF/${pname}-${version}.tar.gz";
+    sha256 = "sha256-MecY4JsIXTgHdkrFkQ+C3fC6OEFRUgjUgf7qxfKeZtM=";
+  };
+  outputs = ["out" "man" "dev" "lib"];
+
+  meta = with lib; {
+    homepage = "https://www.seasip.info/Unix/PSF";
+    description = "Conversion tools for .PSF fonts";
+    longDescription = ''
+      The PSFTOOLS are designed to manipulate fixed-width bitmap fonts,
+      such as DOS or Linux console fonts. Both the PSF1 (8 pixels wide)
+      and PSF2 (any width) formats are supported; the default output
+      format is PSF2.
+    '';
+    platforms = platforms.unix;
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ kaction ];
+  };
+}