Merge "2nd IMEI attestation: Clarify tag usage."

    /**

     * Tag::ATTESTATION_ID_SECOND_IMEI provides an additional IMEI of one of the radios on the

     * device to attested key generation/import operations. This field MUST be accompanied by

     * the Tag::ATTESTATION_ID_IMEI tag. It would only be used to convery a second IMEI the device

     * has, after Tag::ATTESTATION_ID_SECOND_IMEI has been used to convery the first IMEI.

     * device to attested key generation/import operations. It should be used to convey an

     * IMEI different to the one conveyed by the Tag::ATTESTATION_ID_IMEI tag. Like all other

     * ID attestation flags, it may be included independently of other tags.

     *

     * If the device does not support ID attestation (or destroyAttestationIds() was previously

     * called and the device can no longer attest its IDs), any key attestation request that