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/games/freeorion/fix-paths.xslt

@@ -0,0 +1,13 @@
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:output method="xml" omit-xml-declaration="no" indent="yes" />
+
+  <xsl:template match='node() | @*'>
+    <xsl:copy>
+      <xsl:apply-templates select='node() | @*'/>
+    </xsl:copy>
+  </xsl:template>
+
+  <xsl:template match='//text()[starts-with(., "@nixStore@")]'>
+    <xsl:value-of select='concat("@out@", substring-after(substring-after(., "@nixStore@"), "/"))'/>
+  </xsl:template>
+</xsl:stylesheet>