apps/readline: check whether CONFIG_EOL_IS_EITHER_CRLF is defined
apps/readline: check whether CONFIG_EOL_IS_EITHER_CRLF is defined

* We should check whether CONFIG_EOL_IS_EITHER_CRLF is defined,
  instead of checking it's value.

Signed-off-by: Oleg Lyovin <9e7fd33cf90c7e429276114f54b1f8488150523e@partner.samsung.com>

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