extmod/modmachine: Add MICROPY_PY_MACHINE_PIN_BASE option.

And use it in qemu-arm, unix and windows ports to enable PinBase.

Signed-off-by: Damien George <damien@micropython.org>

extmod/machine_pinbase.c

@@ -24,10 +24,10 @@
  * THE SOFTWARE.
  */
 
-#include "py/mpconfig.h"
-#if MICROPY_PY_MACHINE
-
 #include "py/runtime.h"
+
+#if MICROPY_PY_MACHINE_PIN_BASE
+
 #include "extmod/modmachine.h"
 #include "extmod/virtpin.h"
 
@@ -84,4 +84,4 @@ MP_DEFINE_CONST_OBJ_TYPE(
     protocol, &pinbase_pin_p
     );
 
-#endif // MICROPY_PY_MACHINE
+#endif // MICROPY_PY_MACHINE_PIN_BASE