Enable MICROPY_PY_BUILTINS_STR_SJIS for x68k

Author: yunkya2

ports/x68k/mpconfigport.h

@@ -59,6 +59,9 @@
 
 #define MICROPY_PY_ASYNC_AWAIT                  (0)
 #define MICROPY_PY_BUILTINS_SET                 (0)
+#define MICROPY_PY_BUILTINS_STR_UNICODE         (0)
+#define MICROPY_PY_BUILTINS_STR_SJIS            (1)
+#define MICROPY_PY_BUILTINS_STR_SJIS_CHECK      (1)
 #define MICROPY_PY_ATTRTUPLE                    (1)
 #define MICROPY_PY_COLLECTIONS                  (0)
 #define MICROPY_PY_MATH                         (1)

ports/x68k/mpycross/mpconfigport.h

@@ -75,7 +75,9 @@
 #define MICROPY_USE_INTERNAL_PRINTF (0)
 
 #define MICROPY_PY_FSTRINGS         (1)
-#define MICROPY_PY_BUILTINS_STR_UNICODE (1)
+#define MICROPY_PY_BUILTINS_STR_UNICODE         (0)
+#define MICROPY_PY_BUILTINS_STR_SJIS            (1)
+#define MICROPY_PY_BUILTINS_STR_SJIS_CHECK      (1)
 
 #if !(defined(MICROPY_GCREGS_SETJMP) || defined(__x86_64__) || defined(__i386__) || defined(__thumb2__) || defined(__thumb__) || defined(__arm__))
 // Fall back to setjmp() implementation for discovery of GC pointers in registers.