Squeeze down the feather crickit build

Author: tannewt

ports/atmel-samd/boards/feather_m0_express_crickit/mpconfigboard.mk

@@ -16,7 +16,7 @@ CIRCUITPY_FREQUENCYIO = 0
 CHIP_VARIANT = SAMD21G18A
 CHIP_FAMILY = samd21
 
-CFLAGS_INLINE_LIMIT = 55
+CFLAGS_INLINE_LIMIT = 50
 
 # Include these Python libraries in firmware.
 FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_BusDevice