test/crypto: handle unsupported error on session init

test/crypto: handle unsupported error on session init

The session init routine rte_cryptodev_sym_session_init(),
could return -ENOTSUP when the requested algo combination
is not supported by the PMD. This should be treated as
unsupported features. For other return values like -EINVAL
or -ENOMEM the test can be treated as failure.

Signed-off-by: Ankur Dwivedi <adwivedi@marvell.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>