core: add status to main_exit function

core/embed/unix/common.c

@@ -29,7 +29,7 @@ extern void main_clean_exit();
 
 void __shutdown(void) {
   printf("SHUTDOWN\n");
-  main_clean_exit();
+  main_clean_exit(3);
 }
 
 #define COLOR_FATAL_ERROR RGB16(0x7F, 0x00, 0x00)

core/embed/unix/main.c

@@ -405,16 +405,16 @@ STATIC void set_sys_argv(char *argv[], int argc, int start_arg) {
   }
 }
 
-void main_clean_exit() {
+void main_clean_exit(int status) {
   fflush(stdout);
   fflush(stderr);
   mp_obj_t sys_exit =
       mp_obj_dict_get(mp_module_sys.globals, MP_ROM_QSTR(MP_QSTR_exit));
   if (mp_obj_is_callable(sys_exit)) {
-    mp_call_function_1(MP_OBJ_TO_PTR(sys_exit), MP_OBJ_NEW_SMALL_INT(3));
+    mp_call_function_1(MP_OBJ_TO_PTR(sys_exit), MP_OBJ_NEW_SMALL_INT(status));
   }
   // sys.exit shouldn't return so force exit in case it does.
-  exit(3);
+  exit(status);
 }
 
 #ifdef _WIN32