fix macro definition compile issue
`INSTR_BODY(instr_n, instr_format, instr_category, instr_group, imm_tp)
// Vector arithmetic instruction
-`define DEFINE_VA_INSTR(instr_n, instr_format, instr_category,
- instr_group, vav = {}, imm_tp = IMM) \
+`define DEFINE_VA_INSTR(instr_n, instr_format, instr_category, instr_group, vav = {}, imm_tp = IMM) \
class riscv_``instr_n``_instr extends riscv_vector_instr; \
`VA_INSTR_BODY(instr_n, instr_format, instr_category, instr_group, vav, imm_tp)
