MIPS: Implement Neg_d and Neg_s instruction macros.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index c756d43e53aa4007ead098a532df8bf9334e4ceb..be8389fc24686a70f40b44b390e0f38bebdc0b7c 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -830,6 +830,8 @@ class MacroAssembler: public Assembler {
   // MIPS32 R2 instruction macro.
   void Ins(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Ext(Register rt, Register rs, uint16_t pos, uint16_t size);
+  void Neg_s(FPURegister fd, FPURegister fs);
+  void Neg_d(FPURegister fd, FPURegister fs);
 
   // MIPS32 R6 instruction macros.
   void Bovc(Register rt, Register rs, Label* L);