update_font_cache: fix ownership of .uuid files too

(From OE-Core rev: cc2b5dfbfe353425d0b463a4a01589b64f2f5e60)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/postinst-intercepts/update_font_cache

@@ -6,4 +6,6 @@
 set -e
 
 PSEUDO_UNLOAD=1 ${binprefix}qemuwrapper -L $D -E ${fontconfigcacheenv} $D${libexecdir}/${binprefix}fc-cache --sysroot=$D --system-only ${fontconfigcacheparams}
+
 chown -R root:root $D${fontconfigcachedir}
+find $D -type f -name .uuid -exec chown root:root '{}' +