Include compos-module-sdk in the SDK build.

Test: build/soong/scripts/build-mainline-modules.sh
Bug: 203231943
Change-Id: Icbd4b15b2434c8a0a7983d52732b5462f3a8b978
diff --git a/scripts/build-mainline-modules.sh b/scripts/build-mainline-modules.sh
index b05861b..281cb82 100755
--- a/scripts/build-mainline-modules.sh
+++ b/scripts/build-mainline-modules.sh
@@ -17,6 +17,7 @@
 MODULES_SDK_AND_EXPORTS=(
   art-module-sdk
   art-module-test-exports
+  compos-module-sdk
   conscrypt-module-host-exports
   conscrypt-module-sdk
   conscrypt-module-test-exports