riscv: dts: sophgo: sg2044: Add missing riscv,cbop-block-size property

The kernel complains no "riscv,cbop-block-size" and disables the Zicbop
extension. Add the missing property to keep it functional.

Fixes: ae5bac3 ("riscv: dts: sophgo: Add initial device tree of Sophgo SRD3-10")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Inochi Amaoto <[email protected]>
Signed-off-by: Chen Wang <[email protected]>
Signed-off-by: Chen Wang <[email protected]>

Author: inochisa