[midend]重命名Sra指令的kind标识

src/backend/RISCv64/RISCv64ISel.cpp

@@ -517,7 +517,7 @@ void RISCv64ISel::selectNode(DAGNode* node) {
                     CurMBB->addInstruction(std::move(instr));
                     break;
                 }
-                case Instruction::kSRA: {
+                case Instruction::kSra: {
                     auto rhs_const = dynamic_cast<ConstantInteger*>(rhs);
                     auto instr = std::make_unique<MachineInstr>(RVOpcodes::SRAIW);
                     instr->addOperand(std::make_unique<RegOperand>(dest_vreg));