Move mark stack lock up in ordering

Bug: 23589883
Change-Id: I9cc29b96d2636d092e0cb32a5c52de1afabc4d4e
diff --git a/runtime/base/mutex.h b/runtime/base/mutex.h
index 5f2caef..6bf203c 100644
--- a/runtime/base/mutex.h
+++ b/runtime/base/mutex.h
@@ -64,6 +64,7 @@
   kJdwpSocketLock,
   kRegionSpaceRegionLock,
   kTransactionLogLock,
+  kMarkSweepMarkStackLock,
   kJniWeakGlobalsLock,
   kReferenceQueueSoftReferencesLock,
   kReferenceQueuePhantomReferencesLock,
@@ -80,7 +81,6 @@
   kArenaPoolLock,
   kDexFileMethodInlinerLock,
   kDexFileToMethodInlinerMapLock,
-  kMarkSweepMarkStackLock,
   kInternTableLock,
   kOatFileSecondaryLookupLock,
   kTracingUniqueMethodsLock,