tracker_l1_eink: set UI_HAS_JOYSTICK

Author: fdlamotte

variants/wio-tracker-l1-eink/platformio.ini

@@ -49,6 +49,7 @@ build_flags = ${WioTrackerL1Eink.build_flags}
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
   -D DISPLAY_CLASS=GxEPDDisplay
+  -D UI_HAS_JOYSTICK=1
   -D PIN_BUZZER=12
   -D QSPIFLASH=1
   ; -D MESH_PACKET_LOGGING=1