target/riscv: Add xicondops in ISA entry

target/riscv: Add xicondops in ISA entry

XVentanaCondOps is Ventana custom extension. Add
its extension entry in the ISA Ext array

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220816045408.1231135-1-rpathak@ventanamicro.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>