wifi: ath12k: Define ath12k_dp_peer structure & APIs for create & delete

wifi: ath12k: Define ath12k_dp_peer structure & APIs for create & delete

Define the structure of ath12k_dp_peer and also define APIs for creation and
deletion of ath12k_dp_peer based on STA state, as the ath12k_dp_peer is intended
to be used in the subsequent set of patches.

Maintain ath12k_dp_peer in a linked list in ath12k_dp_hw (which is a datapath
component of ath12k_hw) and protect this list using spinlock "peer_lock".

Store peer id based table (array of RCU pointers) of ath12k_dp_peer in
ath12k_dp_hw. Use this peer id table to refer in the per packet Tx and Rx paths
as it provides faster access to ath12k_dp_peer in comparison to linked list
iterative search using peer id or mac address.

Add support to handle deletion of ath12k_dp_peer in case of core reset.

This patch is adding and deleting ath12k_dp_peer created for MLO STA to the
above mentioned RCU pointer table. Addition and deletion of ath12k_dp_peer for
non-MLO STA to RCU pointer table is handled in the subsequent following patch.

Structure ath12k_ml_peer is created and deleted for MLO peers at the time
of connect and disconnect and there is no other use case of it. With the
above design in place for ath12k_dp_peer, ath12k_ml_peer becomes redundant.
Hence, remove the structure ath12k_ml_peer and the list "ml_peers" present
in ath12k_hw maintaining linked list of ath12k_ml_peer.

APIs removed:
 - ath12k_peer_ml_find()
 - ath12k_peer_ml_create()
 - ath12k_peer_ml_delete()

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Harsh Kumar Bijlani <quic_hbijlani@quicinc.com>
Signed-off-by: Ripan Deuri <quic_rdeuri@quicinc.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20251024181548.3255166-7-quic_rdeuri@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>