Break up vl.h.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162

m68k-semi.c

@@ -33,7 +33,9 @@
 #include "qemu.h"
 #define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024)
 #else
-#include "vl.h"
+#include "qemu-common.h"
+#include "sysemu.h"
+#include "gdbstub.h"
 #include "softmmu-semi.h"
 #endif