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/audio/aacgain/default.nix

@@ -0,0 +1,68 @@
+{ lib, stdenv, fetchFromGitLab, fetchpatch }:
+
+stdenv.mkDerivation rec {
+  pname = "aacgain";
+  version = "1.9.0";
+
+  src = fetchFromGitLab {
+    owner = "mulx";
+    repo = "aacgain";
+    rev = "7c29dccd878ade1301710959aeebe87a8f0828f5";
+    sha256 = "07hl432vsscqg01b6wr99qmsj4gbx0i02x4k565432y6zpfmaxm0";
+  };
+
+  hardeningDisable = [ "format" ];
+
+  # -Wnarrowing is enabled by default in recent GCC versions,
+  # causing compilation to fail.
+  NIX_CFLAGS_COMPILE = "-Wno-narrowing";
+
+  postPatch = ''
+    (
+      cd mp4v2
+      patch -p0 < ${fetchpatch {
+        name = "fix_missing_ptr_deref.patch";
+        url = "https://aur.archlinux.org/cgit/aur.git/plain/fix_missing_ptr_deref.patch?h=aacgain-cvs&id=e1a19c920f57063e64bab75cb0d8624731f6e3d7";
+        sha256 = "1cq7r005nvmwdjb25z80grcam7jv6k57jnl2bh349mg3ajmslbq9";
+      }}
+    )
+  '';
+
+  configurePhase = ''
+    runHook preConfigure
+    cd mp4v2
+    ./configure
+
+    cd ../faad2
+    ./configure
+
+    cd ..
+    ./configure
+    runHook postConfigure
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+    cd mp4v2
+    make libmp4v2.la
+
+    cd ../faad2
+    make LDFLAGS=-static
+
+    cd ..
+    make
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    install -D aacgain/aacgain "$out/bin/aacgain"
+  '';
+
+  meta = with lib; {
+    description = "ReplayGain for AAC files";
+    homepage = "https://aacgain.altosdesign.com";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.robbinch ];
+  };
+}