Restore motor power, after it is disabled in tmc2130_get_wave(). This bug manifested itself as compiler warning:

sketch/tmc2130.cpp:827:10: warning: unused variable 'pwr' [-Wunused-variable]

Firmware/tmc2130.cpp

@@ -846,6 +846,7 @@ void tmc2130_get_wave(uint8_t axis, uint8_t* data, FILE* stream)
 		delayMicroseconds(100);
 	}
 	tmc2130_setup_chopper(axis, tmc2130_mres[axis], tmc2130_current_h[axis], tmc2130_current_r[axis]);
+	tmc2130_set_pwr(axis, pwr);
 }
 
 void tmc2130_set_wave(uint8_t axis, uint8_t amp, uint8_t fac1000)