ART: Add class-alloc-inl.h

In an effort to reduce the (transitive) proliferation of heap-inl
add a specific inline header for class instance allocation.

Bug: 118385392
Test: mmma art
Test: m test-art-host
Change-Id: I32529f0221a836452c58687330a91ac0d5fde162
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 7fa5607..40c7301 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -95,6 +95,7 @@
 #include "linear_alloc.h"
 #include "memory_representation.h"
 #include "mirror/array.h"
+#include "mirror/class-alloc-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_ext.h"
 #include "mirror/class_loader.h"