MIPS64: Fix 'MIPS: use DAHI/DATH for li macro on mips64r6.'

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index 8ccea703c49bd1e755283bdb8b6c2e8524533561..323e0908b789c321cc82e2758d793b35f4b128b0 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -700,6 +700,7 @@ class MacroAssembler: public Assembler {
 
   // Load int32 in the rd register.
   void li(Register rd, Operand j, LiFlags mode = OPTIMIZE_SIZE);
+  inline void LiLower32BitHelper(Register rd, Operand j);
   inline void li(Register rd, int64_t j, LiFlags mode = OPTIMIZE_SIZE) {
     li(rd, Operand(j), mode);
   }