[RISCV] Add missing op type OPERAND_UIMM2, OPERAND_UIMM3 and OPERAND_UIMM7 for verifyInstruction

[craig.topper]

LGTM

llvm/lib/Target/RISCV/RISCVInstrInfo.cpp

if (OpType >= RISCVOp::OPERAND_FIRST_RISCV_IMM &&
         OpType <= RISCVOp::OPERAND_LAST_RISCV_IMM) {
       const MachineOperand &MO = MI.getOperand(OI.index());
       if (MO.isImm()) {
         int64_t Imm = MO.getImm();
         bool Ok;
         switch (OpType) {
         default:
           llvm_unreachable("Unexpected operand type");
+        case RISCVOp::OPERAND_UIMM2:
+          Ok = isUInt<2>(Imm);
+          break;
+        case RISCVOp::OPERAND_UIMM3:
+          Ok = isUInt<3>(Imm);
+          break;
         case RISCVOp::OPERAND_UIMM4:
           Ok = isUInt<4>(Imm);
           break;
         case RISCVOp::OPERAND_UIMM5:
           Ok = isUInt<5>(Imm);
           break;
+        case RISCVOp::OPERAND_UIMM7:
+          Ok = isUInt<7>(Imm);
+          break;
         case RISCVOp::OPERAND_UIMM12:
           Ok = isUInt<12>(Imm);
           break;
         case RISCVOp::OPERAND_SIMM12:
           Ok = isInt<12>(Imm);
           break;
         case RISCVOp::OPERAND_UIMM20:
           Ok = isUInt<20>(Imm);