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/applications/kde/kdenlive/ffmpeg-path.patch

@@ -0,0 +1,25 @@
+diff --git a/src/kdenlivesettings.kcfg b/src/kdenlivesettings.kcfg
+index 5edad5ae7..d35347a40 100644
+--- a/src/kdenlivesettings.kcfg
++++ b/src/kdenlivesettings.kcfg
+@@ -403,17 +403,17 @@
+ 
+     <entry name="ffmpegpath" type="Path">
+       <label>FFmpeg / Libav binary path.</label>
+-      <default></default>
++      <default>@ffmpeg@/bin/ffmpeg</default>
+     </entry>
+ 
+     <entry name="ffplaypath" type="Path">
+       <label>FFplay / avplay binary path.</label>
+-      <default></default>
++      <default>@ffmpeg@/bin/ffplay</default>
+     </entry>
+ 
+     <entry name="ffprobepath" type="Path">
+       <label>FFprobe / avprobe binary path.</label>
+-      <default></default>
++      <default>@ffmpeg@/bin/ffprobe</default>
+     </entry>
+ 
+     <entry name="mltthreads" type="Int">