Simon Glass 8632b36b96 command: Introduce functions to obtain command arguments ...

Add some functions which provide an argument to a command, or NULL if
the argument does not exist.

Use the same numbering as argv[] since it seems less confusing than the
previous idea.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Tom Rini <trini@konsulko.com>

2023-12-13 11:51:24 -05:00

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