Issue happens during following scenario:
1. Connecting to ML AP1 (with SSID1) and disconnect.
2. Connecting to ML AP2 (with SSID2), as part of that vdev
is destroyed and created but stored keys for AP1 are not reset.
3. Disconnect for ML AP2.
4. Connect to ML AP1.
Now host driver sends stored keys FW instead of the newly
generated keys sent by supplicant.
To fix this during ML dev initialization
clear the stored keys.
CRs-Fixed: 3649214
Change-Id: Ibffeb8b3108bf353e9140cbc901f99f08d9b0449
5fdc1a6c52