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/build-support/setup-hooks/autoreconf.sh

@@ -0,0 +1,7 @@
+preConfigurePhases="${preConfigurePhases:-} autoreconfPhase"
+
+autoreconfPhase() {
+    runHook preAutoreconf
+    autoreconf ${autoreconfFlags:---install --force --verbose}
+    runHook postAutoreconf
+}