ART: Include cleanup

Let clang-format reorder the header includes.

Derived with:

* .clang-format:
 BasedOnStyle: Google
 IncludeIsMainRegex: '(_test|-inl)?$'

* Steps:
 find . -name '*.cc' -o -name '*.h' | xargs sed -i.bak -e 's/^#include/ #include/' ; git commit -a -m 'ART: Include cleanup'
 git-clang-format -style=file HEAD^
 manual inspection
 git commit -a --amend

Test: mmma art
Change-Id: Ia963a8ce3ce5f96b5e78acd587e26908c7a70d02
diff --git a/compiler/optimizing/code_generator_x86.cc b/compiler/optimizing/code_generator_x86.cc
index af0e646..142cc7f 100644
--- a/compiler/optimizing/code_generator_x86.cc
+++ b/compiler/optimizing/code_generator_x86.cc
@@ -24,9 +24,9 @@
 #include "gc/accounting/card_table.h"
 #include "intrinsics.h"
 #include "intrinsics_x86.h"
+#include "lock_word.h"
 #include "mirror/array-inl.h"
 #include "mirror/class-inl.h"
-#include "lock_word.h"
 #include "thread.h"
 #include "utils/assembler.h"
 #include "utils/stack_checks.h"