Update the cbsysinfo command to show the contents of the CMOS option
table.
While we are here, add some example output for this command, along with
mention of what the unimplemented tags are.
Signed-off-by: Simon Glass <sjg@chromium.org>
Currently all shell command docs are put in the doc/usage root.
Let's group them into cmd/ sub-directory.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>