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/tools/compression/hactool/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "hactool";
+  version = "1.4.0";
+
+  src = fetchFromGitHub {
+    owner = "SciresM";
+    repo = "hactool";
+    rev = version;
+    sha256 = "0305ngsnwm8npzgyhyifasi4l802xnfz19r0kbzzniirmcn4082d";
+  };
+
+  patches = [ ./musl-compat.patch ];
+
+  preBuild = ''
+    mv config.mk.template config.mk
+  '';
+
+  makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -D hactool $out/bin/hactool
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/SciresM/hactool";
+    description = "A tool to manipulate common file formats for the Nintendo Switch";
+    longDescription = "A tool to view information about, decrypt, and extract common file formats for the Nintendo Switch, especially Nintendo Content Archives";
+    license = licenses.isc;
+    maintainers = with maintainers; [ ivar ];
+    platforms = platforms.unix;
+  };
+}

pkgs/tools/compression/hactool/musl-compat.patch

@@ -0,0 +1,13 @@
+diff --git a/main.c b/main.c
+index 07f53cb..f2265df 100644
+--- a/main.c
++++ b/main.c
+@@ -369,7 +369,7 @@ int main(int argc, char **argv) {
+                     return EXIT_FAILURE;
+                 }
+                 nca_ctx.tool_ctx->base_file_type = BASEFILE_FAKE;
+-                nca_ctx.tool_ctx->base_file++; /* Guarantees base_file != NULL. I'm so sorry. */
++                if (!nca_ctx.tool_ctx->base_file) nca_ctx.tool_ctx->base_file = (FILE*) 1;
+                 break;
+             case 32:
+                 tool_ctx.action |= ACTION_ONLYUPDATEDROMFS;