esp8266: Enable config settings helpful for debugging.

esp8266/mpconfigport.h

@@ -8,7 +8,7 @@
 #define MICROPY_EMIT_THUMB          (0)
 #define MICROPY_EMIT_INLINE_THUMB   (0)
 #define MICROPY_MEM_STATS           (0)
-#define MICROPY_DEBUG_PRINTERS      (0)
+#define MICROPY_DEBUG_PRINTERS      (1)
 #define MICROPY_ENABLE_GC           (1)
 #define MICROPY_STACK_CHECK         (0)
 #define MICROPY_REPL_EVENT_DRIVEN   (1)
@@ -38,6 +38,7 @@
 #define MICROPY_PY_UBINASCII        (1)
 #define MICROPY_PY_UCTYPES          (1)
 #define MICROPY_PY_UJSON            (1)
+#define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
 #define MICROPY_CPYTHON_COMPAT      (0)
 #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
 #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_FLOAT)