target/riscv: Fix checks in hmode/hmode32

Add check for the implicit dependence between H and S

Csrs only existed in RV32 will not trigger virtual instruction fault
when not in RV32 based on section 8.6.1 of riscv-privileged spec
(draft-20220717)

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220718130955.11899-6-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>