modem-helpers-qmi: fix auth validation always setting error
The current master fails to connect the bearer with the following message on my pinephone:
Invalid bearer properties: Unsupported authentication methods (none, pap, chap, mschap, mschapv2, eap)
From what I understand mm_bearer_allowed_auth_to_qmi_authentication
is missing a check whether the bitmask failed and therefore always
sets an error. With the changes in this MR mobile data works for me again.
Edited by Julian Dehm