Sync with adafruit/asf4#3

dhalbert · tannewt · commit e7e8e0a95d0d · 2017-10-26T09:56:02.000-07:00
diff --git a/ports/atmel-samd/asf4 b/ports/atmel-samd/asf4
@@ -1 +1 @@
-Subproject commit 8e3e471f481effddd5c23da2342e1e4aab618e1f
+Subproject commit e1d02fde5d23a704d33d74e18fcf624eb56132c5
