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/tools/build-managers/build2/setup-hook.sh

@@ -0,0 +1,85 @@
+build2ConfigurePhase() {
+    runHook preConfigure
+
+    local flagsArray=(
+        "config.c=$CC"
+        "config.cxx=$CXX"
+        "config.cc.coptions+=-O2"
+        "config.cc.poptions+=-DNDEBUG"
+        "config.install.root=$prefix"
+        "config.install.bin=${!outputBin}/bin"
+        "config.install.doc=${!outputDoc}/share/doc/${shareDocName}"
+        "config.install.exec_root=${!outputBin}"
+        "config.install.include=${!outputInclude}/include"
+        "config.install.lib=${!outputLib}/lib"
+        "config.install.libexec=${!outputLib}/libexec"
+        "config.install.man=${!outputDoc}/share/man"
+        "config.install.sbin=${!outputBin}/sbin"
+        "config.install.bin.mode=755"
+        $build2ConfigureFlags "${build2ConfigureFlagsArray[@]}"
+    )
+
+    echo 'configure flags' "${flagsArray[@]}"
+
+    b configure "${flagsArray[@]}"
+
+    runHook postConfigure
+}
+
+build2BuildPhase() {
+    runHook preBuild
+
+    local flagsArray=(
+        $build2BuildFlags "${build2BuildFlagsArray[@]}"
+    )
+
+    echo 'build flags' "${flagsArray[@]}"
+    b "${flagsArray[@]}"
+
+    runHook postBuild
+}
+
+build2CheckPhase() {
+    runHook preCheck
+
+    local flagsArray=(
+        $build2CheckFlags "${build2CheckFlags[@]}"
+    )
+
+    echo 'check flags' "${flagsArray[@]}"
+
+    b test ${build2Dir:-.} "${flagsArray[@]}"
+
+    runHook postCheck
+}
+
+build2InstallPhase() {
+    runHook preInstall
+
+    local flagsArray=(
+        $build2InstallFlags "${build2InstallFlagsArray[@]}"
+        ${installTargets:-}
+    )
+
+    echo 'install flags' "${flagsArray[@]}"
+    b install "${flagsArray[@]}"
+
+    runHook postInstall
+}
+
+if [ -z "${dontUseBuild2Configure-}" -a -z "${configurePhase-}" ]; then
+    setOutputFlags=
+    configurePhase=build2ConfigurePhase
+fi
+
+if [ -z "${dontUseBuild2Build-}" -a -z "${buildPhase-}" ]; then
+    buildPhase=build2BuildPhase
+fi
+
+if [ -z "${dontUseBuild2Check-}" -a -z "${checkPhase-}" ]; then
+    checkPhase=build2CheckPhase
+fi
+
+if [ -z "${dontUseBuild2Install-}" -a -z "${installPhase-}" ]; then
+    installPhase=build2InstallPhase
+fi