bdinfo: riscv: Use the generic bd command

This arch has none of its own info to show. Move it over to use the
generic do_bdinfo().

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
1 file changed