Stub out get_paused in nrf builds.

Author: tannewt

ports/nrf/common-hal/pulseio/PulseIn.c

@@ -71,6 +71,10 @@ uint16_t common_hal_pulseio_pulsein_get_maxlen(pulseio_pulsein_obj_t* self) {
     return 0xadaf;
 }
 
+bool common_hal_pulseio_pulsein_get_paused(pulseio_pulsein_obj_t* self) {
+    return true;
+}
+
 uint16_t common_hal_pulseio_pulsein_get_len(pulseio_pulsein_obj_t* self) {
     return 0xadaf;
 }