psa_restrict_key_policy() function

#PSA_SUCCESS \c *policy contains the intersection of the original value of \c *policy and \c *constraint. #PSA_ERROR_INVALID_ARGUMENT \c key_type, \c *policy and \c *constraint are incompatible. \c *policy is unchanged.

This function requires providing the key type for which the policy is being restricted, since some algorithm policy definitions (e.g. MAC) have different properties depending on what kind of cipher it is combined with.