Update minitft_featherwing.py

button mask after display, no clue why

Author: hexthat

adafruit_featherwing/minitft_featherwing.py

@@ -85,6 +85,7 @@ def __init__(self, address=0x5E, i2c=None, spi=None):
                                          chip_select=board.D5)
         self.display = ST7735R(display_bus, width=160, height=80, colstart=24,
                                rotation=270, bgr=True)
+        self._ss.pin_mode_bulk(self._button_mask, self._ss.INPUT_PULLUP)
 
     @property
     def backlight(self):