MIPS: [turbofan] Add RoundUint32ToFloat32 operator to Turbofan.

src/compiler/mips/instruction-codes-mips.h

Index: src/compiler/mips/instruction-codes-mips.h
diff --git a/src/compiler/mips/instruction-codes-mips.h b/src/compiler/mips/instruction-codes-mips.h
index f0ea4637741f74852f098cca6fc141d0a56efee6..b9849ab5512462e395b2c897678d58d918c3478e 100644
--- a/src/compiler/mips/instruction-codes-mips.h
+++ b/src/compiler/mips/instruction-codes-mips.h
@@ -81,6 +81,7 @@ namespace compiler {
   V(MipsCvtDW)                     \
   V(MipsCvtDUw)                    \
   V(MipsCvtSW)                     \
+  V(MipsCvtSUw)                    \
   V(MipsLb)                        \
   V(MipsLbu)                       \
   V(MipsSb)                        \
@@ -105,7 +106,6 @@ namespace compiler {
   V(MipsStoreToStackSlot)          \
   V(MipsStackClaim)
 
-
 // Addressing modes represent the "shape" of inputs to an instruction.
 // Many instructions support multiple addressing modes. Addressing modes
 // are encoded into the InstructionCode of the instruction and tell the