wifi: ath12k: add MBSSID beacon support

- A single beacon template is used for one multiple BSSID group as
only one interface from group transmits the beacons. But firmware
requires the host to send this template each time a nontransmitted
interface is brought up. Hence, modify existing logic to retrieve
the template from vif context of the transmitting interface. Also,
firmware crashes if host sends a template for a nontransmitted
interface which is already up, add a check to avoid this.
- Set rsnie_present and wpaie_present fields for nontransmitted VAPs.
- Send offset to the multiple BSSID element in the beacon template
firmware.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240508202912.11902-8-quic_alokad@quicinc.com