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/tools/misc/xdummy/default.nix

@@ -0,0 +1,85 @@
+{ writeText, writeScriptBin, xorg, xkeyboard_config, runtimeShell
+, unfreeFonts ? false, lib}:
+
+let
+  xorgConfig = writeText "dummy-xorg.conf" ''
+    Section "ServerLayout"
+      Identifier     "dummy_layout"
+      Screen         0 "dummy_screen"
+      InputDevice    "dummy_keyboard" "CoreKeyboard"
+      InputDevice    "dummy_mouse" "CorePointer"
+    EndSection
+
+    Section "ServerFlags"
+      Option "DontVTSwitch" "true"
+      Option "AllowMouseOpenFail" "true"
+      Option "PciForceNone" "true"
+      Option "AutoEnableDevices" "false"
+      Option "AutoAddDevices" "false"
+    EndSection
+
+    Section "Files"
+      ModulePath "${xorg.xorgserver.out}/lib/xorg/modules"
+      ModulePath "${xorg.xf86videodummy}/lib/xorg/modules"
+      XkbDir "${xkeyboard_config}/share/X11/xkb"
+      FontPath "${xorg.fontadobe75dpi}/lib/X11/fonts/75dpi"
+      FontPath "${xorg.fontadobe100dpi}/lib/X11/fonts/100dpi"
+      FontPath "${xorg.fontmiscmisc}/lib/X11/fonts/misc"
+      FontPath "${xorg.fontcursormisc}/lib/X11/fonts/misc"
+    ${lib.optionalString unfreeFonts ''
+      FontPath "${xorg.fontbhlucidatypewriter75dpi}/lib/X11/fonts/75dpi"
+      FontPath "${xorg.fontbhlucidatypewriter100dpi}/lib/X11/fonts/100dpi"
+      FontPath "${xorg.fontbh100dpi}/lib/X11/fonts/100dpi"
+    ''}
+    EndSection
+
+    Section "Module"
+      Load           "dbe"
+      Load           "extmod"
+      Load           "freetype"
+      Load           "glx"
+    EndSection
+
+    Section "InputDevice"
+      Identifier     "dummy_mouse"
+      Driver         "void"
+    EndSection
+
+    Section "InputDevice"
+      Identifier     "dummy_keyboard"
+      Driver         "void"
+    EndSection
+
+    Section "Monitor"
+      Identifier     "dummy_monitor"
+      HorizSync       30.0 - 130.0
+      VertRefresh     50.0 - 250.0
+      Option         "DPMS"
+    EndSection
+
+    Section "Device"
+      Identifier     "dummy_device"
+      Driver         "dummy"
+      VideoRam       192000
+    EndSection
+
+    Section "Screen"
+      Identifier     "dummy_screen"
+      Device         "dummy_device"
+      Monitor        "dummy_monitor"
+      DefaultDepth    24
+      SubSection     "Display"
+        Depth       24
+        Modes      "1280x1024"
+      EndSubSection
+    EndSection
+  '';
+
+in writeScriptBin "xdummy" ''
+  #!${runtimeShell}
+  exec ${xorg.xorgserver.out}/bin/Xorg \
+    -noreset \
+    -logfile /dev/null \
+    "$@" \
+    -config "${xorgConfig}"
+''