Change thread.h to thread-inl.h for missing Thread::Current for rosalloc.cc

Change-Id: Ieded9c5c93839c8f3eb5c5427229743a4c45c5ee
diff --git a/runtime/gc/allocator/rosalloc.cc b/runtime/gc/allocator/rosalloc.cc
index 3030fa7..469b098 100644
--- a/runtime/gc/allocator/rosalloc.cc
+++ b/runtime/gc/allocator/rosalloc.cc
@@ -15,7 +15,7 @@
  */
 
 #include "base/mutex-inl.h"
-#include "thread.h"
+#include "thread-inl.h"
 #include "thread_list.h"
 #include "rosalloc.h"