WPS: Remove old duplicate network even if key is different

WPS: Remove old duplicate network even if key is different

Previously, WPS credential provisioning removed duplicated network
entries only if they had identicical SSID, security parameters, and the
keys. However, it is possible that the AP has changes its keys and
leaving the old entry behind can result in connectibity issues (e.g.,
with 4-way handshake failing due to use of the old PSK). Fix this by
allowing the old network entry to be removed even if the keys
(passphrase, PSK, WEP keys) are different.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>