Prepare for SoC rework of ARM code:
- rename CONFIG_BOOTBINFUNC into  CONFIG_INIT_CRITICAL
- rename memsetup into lowlevel_init (function name and source files)
diff --git a/doc/README.modnet50 b/doc/README.modnet50
index d8d9c9d..30338ce 100644
--- a/doc/README.modnet50
+++ b/doc/README.modnet50
@@ -47,7 +47,7 @@
 
 cpu/arm720t/serial_netarm.c .. serial I/O for the cpu
 
-board/modnet50/memsetup.S   .. memory setup for ModNET50
+board/modnet50/lowlevel_init.S   .. memory setup for ModNET50
 board/modnet50/flash.c	    .. flash routines
 board/modnet50/modnet50.c   .. some board init stuff