Add VSUB{S,D} instructions to the integrated ARM assembler.

src/DartARM32/assembler_arm.h

Index: src/DartARM32/assembler_arm.h
diff --git a/src/DartARM32/assembler_arm.h b/src/DartARM32/assembler_arm.h
index 0e2d2d4e59696e2f3a32635b50bf970112036385..d90d59b88f28b193f9f264594d17d4de099cda54 100644
--- a/src/DartARM32/assembler_arm.h
+++ b/src/DartARM32/assembler_arm.h
@@ -655,8 +655,12 @@ class Assembler : public ValueObject {
 #endif
   void vaddqi(OperandSize sz, QRegister qd, QRegister qn, QRegister qm);
   void vaddqs(QRegister qd, QRegister qn, QRegister qm);
+#if 0
+  // Moved to Arm32::AssemblerARM32::vsubs()
   void vsubs(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);
+  // Moved to Arm32::AssemblerARM32::vsubd()
   void vsubd(DRegister dd, DRegister dn, DRegister dm, Condition cond = AL);
+#endif
   void vsubqi(OperandSize sz, QRegister qd, QRegister qn, QRegister qm);
   void vsubqs(QRegister qd, QRegister qn, QRegister qm);
   void vmuls(SRegister sd, SRegister sn, SRegister sm, Condition cond = AL);