esas2r: Correct typos of "validate" in a comment

 *              1)  verify the fi_version is correct

 *              2)  verify the checksum of the entire image.

 *              3)  validate the adap_typ, action and length fields.

 *              4)  valdiate each component header. check the img_type and

 *              4)  validate each component header. check the img_type and

 *                  length fields

 *              5)  valdiate each component image.  validate signatures and

 *              5)  validate each component image.  validate signatures and

 *                  local checksums

 */

static bool verify_fi(struct esas2r_adapter *a,