wifi: ath12k: Resolve multicast packet drop by populating key_cipher in ath12k_install_key()

Currently, the key_cipher in the ath12k_vif structure, which represents the
group cipher of the MLD AP, is populated when the link address matches the
ieee80211_vif address within ath12k_install_key().

However, in MLD AP, the link address and ieee80211_vif address can differ.
Due to this key_cipher is not populated and multicast packets don't get the
correct cipher information and resulting multicast packets drop.

To fix this, compare the link address with the arvif->bssid instead of the
ieee80211_vif address.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00209-QCAHKSWPL_SILICONZ-1

Fixes: 3dd2c68f ("wifi: ath12k: prepare vif data structure for MLO handling")
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250403082207.3323938-2-aaradhana.sahu@oss.qualcomm.com


Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>