nrf/main: Execute boot.py/main.py frozen modules without a file system.
When the file system is not enabled, the boot.py and main.py modules will
still be executed, if they are frozen.
@@ -230,7 +230,7 @@ pin_init0();
led_state(1, 0);
-#if MICROPY_VFS || MICROPY_MBFS
+#if MICROPY_VFS || MICROPY_MBFS || MICROPY_MODULE_FROZEN
// run boot.py and main.py if they exist.
pyexec_file_if_exists("boot.py");
pyexec_file_if_exists("main.py");
