lib: Add codal as a submodule.

dpgeorge · dpgeorge · commit 58b660a4e8e1 · 2020-11-24T14:05:37.000+11:00
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "lib/micropython"]
 	path = lib/micropython
 	url = https://github.com/micropython/micropython
+[submodule "lib/codal"]
+	path = lib/codal
+	url = https://github.com/lancaster-university/codal.git
diff --git a/lib/codal b/lib/codal
@@ -0,0 +1 @@
+Subproject commit 18aa65b99a100f1923f14f1cd7bc8fc3b38afdc6
