add neotrel

Author: ladyada

build_platform.py

@@ -65,6 +65,7 @@
     "pygamer" : "adafruit:samd:adafruit_pygamer_m4:speed=120",
     "hallowing_m0" : "adafruit:samd:adafruit_hallowing",
     "hallowing_m4" : "adafruit:samd:adafruit_hallowing_m4:speed=120,usbstack=tinyusb",
+    "neotrellis_m4" : "adafruit:samd:adafruit_trellis_m4:speed=120,usbstack=tinyusb",
     "monster_m4sk" : "adafruit:samd:adafruit_monster_m4sk:speed=120,usbstack=tinyusb",
     "pyportal" : "adafruit:samd:adafruit_pyportal_m4:speed=120,usbstack=tinyusb",
     "pyportal_titano" : "adafruit:samd:adafruit_pyportal_m4_titano:speed=120,usbstack=tinyusb",