Make DSC files relocatable.
* Make the header const. It will be modified after loading, but making
it non-const would need a gsinit, wasting disk space and RAM.
diff --git a/contiki/apps/netconf-dsc.c b/contiki/apps/netconf-dsc.c
index 33858e0..609e0bc 100644
--- a/contiki/apps/netconf-dsc.c
+++ b/contiki/apps/netconf-dsc.c
@@ -67,7 +67,7 @@
#endif /* CTK_CONF_ICON_TEXTMAPS */
#if CTK_CONF_ICONS
-static struct ctk_icon netconf_icon =
+static const struct ctk_icon netconf_icon =
{CTK_ICON("Network setup", tcpipconficon_bitmap, tcpipconficon_textmap)};
#else
extern struct ctk_icon netconf_icon;