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/libeatmydata/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, strace, which }:
+
+stdenv.mkDerivation rec {
+  pname = "libeatmydata";
+  version = "105";
+
+  src = fetchFromGitHub {
+    owner = "stewartsmith";
+    repo = pname;
+    rev = "${pname}-${version}";
+    sha256 = "0sx803h46i81h67xbpd3c7ky0nhaw4gij214nsx4lqig70223v9r";
+  };
+
+  patches = [ ./find-shell-lib.patch ];
+
+  patchFlags = "-p0";
+
+  postPatch = ''
+    substituteInPlace eatmydata.in \
+      --replace NIX_OUT_DIR $out
+
+    patchShebangs .
+  '';
+
+  nativeBuildInputs = [
+    autoreconfHook
+  ] ++ lib.optionals doCheck [ strace which ];
+
+  # while we can *build* in parallel, the tests also run in parallel which does
+  # not work with v105. Later versions (unreleased) have a fix for that. The
+  # problem is that on hydra we cannot use strace, so the tests don't run there.
+  enableParallelBuilding = true;
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Small LD_PRELOAD library to disable fsync and friends";
+    homepage = "https://www.flamingspork.com/projects/libeatmydata/";
+    license = licenses.gpl3Plus;
+    mainProgram = "eatmydata";
+    platforms = platforms.unix;
+  };
+}

pkgs/development/libraries/libeatmydata/find-shell-lib.patch

@@ -0,0 +1,20 @@
+--- eatmydata.in	2020-02-01 18:10:59.618679823 -0800
++++ eatmydata.in.new	2020-02-01 18:08:25.092620247 -0800
+@@ -15,15 +15,8 @@
+ # You should have received a copy of the GNU General Public License
+ # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ 
+-export `dpkg-architecture|grep DEB_BUILD_MULTIARCH`
+-
+-shlib="/usr/lib/$DEB_BUILD_MULTIARCH/eatmydata.sh"
+-if [ -f "$shlib" ]; then
+-    . "$shlib"
+-else
+-    echo "Unable to locate eatmydata shell library, it was not enabled" >&2
+-    exec "$@"
+-fi
++shlib="NIX_OUT_DIR/libexec/eatmydata.sh"
++. "$shlib"
+ 
+ usage()
+ {