mpy-cross: Get compiling after recent persistent code refactors.

mpy-cross/main.c

@@ -32,6 +32,7 @@
 
 #include "py/mpstate.h"
 #include "py/compile.h"
+#include "py/persistentcode.h"
 #include "py/runtime.h"
 #include "py/gc.h"
 #include "py/stackctrl.h"

mpy-cross/mpconfigport.h

@@ -47,6 +47,7 @@
 
 #define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE (0)
 
+#define MICROPY_READER_POSIX        (1)
 #define MICROPY_ENABLE_RUNTIME      (0)
 #define MICROPY_ENABLE_GC           (1)
 #define MICROPY_STACK_CHECK         (1)