Make everything in the DSCs const

* This is the only way I found to have SDCC generate data that doens't
need a runtime init.
diff --git a/contiki/apps/processes-dsc.c b/contiki/apps/processes-dsc.c
index e289818..8966d5f 100644
--- a/contiki/apps/processes-dsc.c
+++ b/contiki/apps/processes-dsc.c
@@ -36,14 +36,14 @@
 #include "dsc.h"
 
 /*-----------------------------------------------------------------------------------*/
-DSC(processes_dsc,
+const DSC(processes_dsc,
     "Process information",
     "process.prg",
     processes_init,
     &processes_icon);
 /*-----------------------------------------------------------------------------------*/
 #if CTK_CONF_ICON_BITMAPS
-static unsigned char processesicon_bitmap[3*3*8] = {
+static const unsigned char processesicon_bitmap[3*3*8] = {
   0x00, 0x7f, 0x43, 0x4c, 0x58, 0x53, 0x60, 0x6f,
   0x00, 0xff, 0x00, 0x7e, 0x00, 0xff, 0x00, 0xff,
   0x00, 0xfe, 0xc2, 0x32, 0x1a, 0xca, 0x06, 0xf6,
@@ -59,7 +59,7 @@
 #endif /* CTK_CONF_ICON_BITMAPS */
 
 #if CTK_CONF_ICON_TEXTMAPS
-static char processesicon_textmap[9] = {
+static const char processesicon_textmap[9] = {
   '0', '1', ' ',
   ' ', '0', '1',
   '1', '0', '/'