[mips] Remove asm string parameter from pseudo instructions. Add InstrItinClass 
parameter.

llvm-svn: 170661
diff --git a/llvm/lib/Target/Mips/MipsDSPInstrFormats.td b/llvm/lib/Target/Mips/MipsDSPInstrFormats.td
index 8e01d06..a72a763 100644
--- a/llvm/lib/Target/Mips/MipsDSPInstrFormats.td
+++ b/llvm/lib/Target/Mips/MipsDSPInstrFormats.td
@@ -24,8 +24,9 @@
   let Predicates = [HasDSP];
 }
 
-class PseudoDSP<dag outs, dag ins, list<dag> pattern>:
-  MipsPseudo<outs, ins, "", pattern> {
+class PseudoDSP<dag outs, dag ins, list<dag> pattern,
+                InstrItinClass itin = IIPseudo>:
+  MipsPseudo<outs, ins, pattern, itin> {
   let Predicates = [HasDSP];
 }