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/os-specific/linux/i810switch/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenv, fetchurl, pciutils }:
+
+stdenv.mkDerivation {
+  pname = "i810switch";
+  version = "0.6.5";
+
+  installPhase = "
+    sed -i -e 's+/usr++' Makefile
+    sed -i -e 's+^\\(.*putenv(\"PATH=\\).*$+\\1${pciutils}/sbin\");+' i810switch.c
+    make clean
+    make install DESTDIR=\${out}
+  ";
+
+  src = fetchurl {
+    url = "http://www16.plala.or.jp/mano-a-mano/i810switch/i810switch-0.6.5.tar.gz";
+    sha256 = "d714840e3b14e1fa9c432c4be0044b7c008d904dece0d611554655b979cad4c3";
+  };
+
+  meta = with lib; {
+    description = "A utility for switching between the LCD and external VGA display on Intel graphics cards";
+    homepage = "http://www16.plala.or.jp/mano-a-mano/i810switch.html";
+    maintainers = with maintainers; [ ];
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}