AAPT2: Few tweaks to get shared-libraries working

Test: manual (building shared support library demo)
Change-Id: I4730645aa92ba1893baf67ffe35fbd4aac0f8e46
diff --git a/tools/aapt2/ResourceUtils.cpp b/tools/aapt2/ResourceUtils.cpp
index 2d8e5a21..ca6738b 100644
--- a/tools/aapt2/ResourceUtils.cpp
+++ b/tools/aapt2/ResourceUtils.cpp
@@ -533,6 +533,7 @@
     case android::Res_value::TYPE_REFERENCE:
     case android::Res_value::TYPE_ATTRIBUTE:
     case android::Res_value::TYPE_DYNAMIC_REFERENCE:
+    case android::Res_value::TYPE_DYNAMIC_ATTRIBUTE:
       return android::ResTable_map::TYPE_REFERENCE;
 
     case android::Res_value::TYPE_STRING: