Add statsd exports to be consumed by unbundled modules

This is needed first for ART to enable statsd metrics reporting, but
this will be needed by more modules as they become unbundled.

Test: build-mainline-modules.sh
Bug: 178500083
Change-Id: I5af0b8db7a24c86ffd3f34732ac747a4fc6a7a55
diff --git a/scripts/build-mainline-modules.sh b/scripts/build-mainline-modules.sh
index b8485ea..ac67438 100755
--- a/scripts/build-mainline-modules.sh
+++ b/scripts/build-mainline-modules.sh
@@ -26,6 +26,8 @@
   platform-mainline-test-exports
   runtime-module-host-exports
   runtime-module-sdk
+  stats-log-api-gen-exports
+  statsd-module-sdk
   tzdata-module-test-exports
 )