hw/riscv: Use generic hwaddr for firmware addresses Signed-off-by: Anton Johansson <anjo@rev.ng> Message-ID: <20251027-feature-single-binary-hw-v1-v2-1-44478d589ae9@rev.ng> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> [PMD: Do not update riscv_load_kernel()] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>