Move monitor.h to include/monitor/

+ monitor-android.h -> include/android/monitor.h

Change-Id: Iad8afa71461dd70c6997902516fbf4ef7cb8babe
diff --git a/gdbstub.c b/gdbstub.c
index 1c0b793..37cfa0a 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -29,7 +29,7 @@
 
 #include "qemu.h"
 #else
-#include "monitor.h"
+#include "monitor/monitor.h"
 #include "qemu-char.h"
 #include "sysemu.h"
 #include "exec/gdbstub.h"