[dv/kmac] update testplan to account for kmac_app
[dv/kmac] update testplan to account for kmac_app

this PR updates the testplan to account for the kmac_app test, and
updates the description accoordingly.

the related sw_access test is removed and added as an error case in the
error_test.

Signed-off-by: Udi Jonnalagadda <790cd677b6a22a419ffcfe0eb4293d8866eb70c9@google.com>

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