configfile: Allow getchoice() to take a list

If a list is passed to getchoice(), seamlessly convert it to a dict.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/bltouch.py

@@ -42,7 +42,7 @@ class BLTouchProbe:
         # Create an "endstop" object to handle the sensor pin
         self.mcu_endstop = ppins.setup_pin('endstop', config.get('sensor_pin'))
         # output mode
-        omodes = {'5V': '5V', 'OD': 'OD', None: None}
+        omodes = ['5V', 'OD', None]
         self.output_mode = config.getchoice('set_output_mode', omodes, None)
         # Setup for sensor test
         self.next_test_time = 0.