target/riscv: rvv: Check single width operator for vfncvt.rod.f.f.w

The opfv_narrow_check needs to check the single width float operator by
require_rvf.

Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Cc: qemu-stable <qemu-stable@nongnu.org>
Message-ID: <20240322092600.1198921-4-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/insn_trans/trans_rvv.c.inc

@@ -2817,6 +2817,7 @@ static bool opffv_narrow_check(DisasContext *s, arg_rmr *a)
 static bool opffv_rod_narrow_check(DisasContext *s, arg_rmr *a)
 {
     return opfv_narrow_check(s, a) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8);
 }