Fix submodule issue

hierophect · hierophect · commit ccbc15046a81 · 2020-10-09T13:29:35.000-04:00
diff --git a/ports/atmel-samd/peripherals b/ports/atmel-samd/peripherals
@@ -1 +1 @@
-Subproject commit 2ff4ab05101ce7d3e105009cc6612df6e992123f
+Subproject commit a7e39c4d01aa5916015beecb021777617e77b0ad
