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/applications/radio/kalibrate-hackrf/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, fftw, hackrf, libusb1 }:
+
+stdenv.mkDerivation {
+  pname = "kalibrate-hackrf";
+  version = "unstable-2016-08-27";
+
+  # There are no tags/releases, so use the latest commit from git master.
+  # Currently, the latest commit is from 2016-07-03.
+  src = fetchFromGitHub {
+    owner = "scateu";
+    repo = "kalibrate-hackrf";
+    rev = "2492c20822ca6a49dce97967caf394b1d4b2c43e";
+    sha256 = "1jvn1qx7csgycxpx1k804sm9gk5a0c65z9gh8ybp9awq3pziv0nx";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  buildInputs = [ fftw hackrf libusb1 ];
+
+  postInstall = ''
+    mv $out/bin/kal $out/bin/kal-hackrf
+  '';
+
+  meta = with lib; {
+    description = "Calculate local oscillator frequency offset in hackrf devices";
+    longDescription = ''
+      Kalibrate, or kal, can scan for GSM base stations in a given frequency
+      band and can use those GSM base stations to calculate the local
+      oscillator frequency offset.
+
+      This package is for hackrf devices.
+    '';
+    homepage = "https://github.com/scateu/kalibrate-hackrf";
+    license = licenses.bsd2;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.mog ];
+  };
+}