This dumps the CSR mscratch/sscratch/satp and meanwhile aligns
the output of CSR mtval/stval.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 20210519155738.20486-1-changbin.du@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>