MIPS64: Fix '[turbofan] Implement OSR for outer loops.'

Add missing include of 159b1417.

BUG=

Review URL: https://codereview.chromium.org/845983003

Cr-Commit-Position: refs/heads/master@{#26025}

src/compiler/mips64/code-generator-mips64.cc

@@ -7,6 +7,7 @@
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
+#include "src/compiler/osr.h"
 #include "src/mips/macro-assembler-mips.h"
 #include "src/scopes.h"