Separate system_ext_hwservice_contexts out of system sepolicy.

Bug: 137712473
Test: boot crosshatch
Change-Id: Ic5774da74e200b9d7699ac2240a12e7616dc512a
diff --git a/Android.mk b/Android.mk
index 092d568..5cb79be 100644
--- a/Android.mk
+++ b/Android.mk
@@ -316,8 +316,10 @@
     system_ext_sepolicy.cil \
     system_ext_file_contexts \
     system_ext_file_contexts_test \
-    system_ext_mapping_file \
+    system_ext_hwservice_contexts \
+    system_ext_hwservice_contexts_test \
     system_ext_seapp_contexts \
+    system_ext_mapping_file \
 
 endif