Fix linker error when ONEWIREIO = 0

This addendum to #5139 allows actually turning off onewireio. (Not
currently used by any board.)

Author: cwalther

shared-bindings/bitbangio/__init__.c

@@ -72,7 +72,9 @@
 STATIC const mp_rom_map_elem_t bitbangio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_bitbangio) },
     { MP_ROM_QSTR(MP_QSTR_I2C),   MP_ROM_PTR(&bitbangio_i2c_type) },
+    #if CIRCUITPY_ONEWIREIO
     { MP_ROM_QSTR(MP_QSTR_OneWire),   MP_ROM_PTR(&onewireio_onewire_type) },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_SPI),   MP_ROM_PTR(&bitbangio_spi_type) },
 };
 

shared-bindings/busio/__init__.c

@@ -73,7 +73,9 @@ STATIC const mp_rom_map_elem_t busio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_busio) },
     { MP_ROM_QSTR(MP_QSTR_I2C),   MP_ROM_PTR(&busio_i2c_type) },
     { MP_ROM_QSTR(MP_QSTR_SPI),   MP_ROM_PTR(&busio_spi_type) },
+    #if CIRCUITPY_ONEWIREIO
     { MP_ROM_QSTR(MP_QSTR_OneWire),   MP_ROM_PTR(&onewireio_onewire_type) },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_UART),   MP_ROM_PTR(&busio_uart_type) },
 };