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>

doc/overrides.css

@@ -0,0 +1,22 @@
+.docbook .xref img[src^=images\/callouts\/],
+.screen img,
+.programlisting img,
+.literallayout img,
+.synopsis img {
+    width: 1em;
+}
+
+.calloutlist img {
+    width: 1.5em;
+}
+
+.prompt,
+.screen img,
+.programlisting img,
+.literallayout img,
+.synopsis img {
+    -moz-user-select: none;
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}