[turbofan] Turn Math.clz32 into an inlinable builtin.

src/compiler/raw-machine-assembler.h

Index: src/compiler/raw-machine-assembler.h
diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h
index 82ef3fabf2297490045baa116d15fdc78554081a..bcc96803f766869d65984a005751c705d864a68b 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -175,6 +175,7 @@ class RawMachineAssembler : public GraphBuilder {
   Node* Word32Ror(Node* a, Node* b) {
     return NewNode(machine()->Word32Ror(), a, b);
   }
+  Node* Word32Clz(Node* a) { return NewNode(machine()->Word32Clz(), a); }
   Node* Word32Equal(Node* a, Node* b) {
     return NewNode(machine()->Word32Equal(), a, b);
   }