modules: tf-m: restore check on CONFIG_TFM_PARTITION_INITIAL_ATTESTATION

Restore the check that was introduced in
cd8d4cca and removed in
cac7f405, rather than checking only
CONFIG_TFM_PSA_TEST_INITIAL_ATTESTATION in the tfm_psa_test sample.

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>