system/utils: Add '--help' option support to cat command
system/utils: Add '--help' option support to cat command

- Adds '--help' option to cat command.
- Modifies typo in command usage macro definitions.

Signed-off-by: Lokesh B V <a10c1c2561c872cd1fd5899c4340d5ec87a91507@partner.samsung.com>

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