Enum types now emit operator| and operator|= for easier bitset manipulation.

Bug: 31702236
Change-Id: I166da2fe0019493c81151914ebabf591b705a713
Test: visual check, mma
diff --git a/Type.cpp b/Type.cpp
index d81eeef..eafda3a 100644
--- a/Type.cpp
+++ b/Type.cpp
@@ -321,6 +321,10 @@
     return OK;
 }
 
+status_t Type::emitGlobalTypeDeclarations(Formatter &) const {
+    return OK;
+}
+
 status_t Type::emitTypeDefinitions(
         Formatter &, const std::string) const {
     return OK;