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/development/libraries/pico-sdk/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "pico-sdk";
+  version = "1.3.1";
+
+  src = fetchFromGitHub {
+    owner = "raspberrypi";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-Yf3cVFdI8vR/qcxghcx8fsbYs1qD8r6O5aqZ0AkSLDc=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  # SDK contains libraries and build-system to develop projects for RP2040 chip
+  # We only need to compile pioasm binary
+  sourceRoot = "source/tools/pioasm";
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/lib/pico-sdk
+    cp -a ../../../* $out/lib/pico-sdk/
+    chmod 755 $out/lib/pico-sdk/tools/pioasm/build/pioasm
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/raspberrypi/picotool";
+    description = "SDK provides the headers, libraries and build system necessary to write programs for the RP2040-based devices";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ muscaln ];
+    platforms = platforms.unix;
+  };
+}