wifi: ath12k: Add support to TDMA and MLO stats

wifi: ath12k: Add support to TDMA and MLO stats

Add support to request TDMA stats, MLO scheduled stats and MLO IPC stats
from firmware through HTT stats type 57, 63 and 64, respectively. These
stats give information about TDMA schedules, TDMA slot switches, MLO
preferred timeout, delay, MLO IPC ring count, etc.

Note: WCN firmware version -
WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 does not support
tags HTT_STATS_PDEV_TDMA_TAG(187), HTT_STATS_MLO_SCHED_STATS_TAG(190)
and HTT_STATS_PDEV_MLO_IPC_STATS_TAG(191), currently.

Sample output:
echo 57 > /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats
HTT_PDEV_TDMA_STATS_TLV:
mac_id = 0
num_tdma_active_schedules = 0
num_tdma_reserved_schedules = 0
num_tdma_restricted_schedules = 0
num_tdma_unconfigured_schedules = 0
num_tdma_slot_switches = 0
num_tdma_edca_switches = 0

echo 63 > /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats
HTT_STATS_MLO_SCHED_STATS:
num_sec_link_sched = 0
num_pref_link_timeout = 0
num_pref_link_sch_delay_ipc = 0
num_pref_link_timeout_ipc = 0

echo 64 > /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats_type
cat /sys/kernel/debug/ath12k/pci-0000\:58\:00.0/mac0/htt_stats
HTT_STATS_MLO_IPC_STATS:
src_link: 0
mlo_ipc_ring_full_cnt[0]: 0
mlo_ipc_ring_full_cnt[1]: 0
mlo_ipc_ring_full_cnt[2]: 0
mlo_ipc_ring_full_cnt[3]: 0
mlo_ipc_ring_full_cnt[4]: 0
mlo_ipc_ring_full_cnt[5]: 0
mlo_ipc_ring_full_cnt[6]: 0

src_link: 1
mlo_ipc_ring_full_cnt[0]: 0
mlo_ipc_ring_full_cnt[1]: 0
mlo_ipc_ring_full_cnt[2]: 0
mlo_ipc_ring_full_cnt[3]: 0
mlo_ipc_ring_full_cnt[4]: 0
mlo_ipc_ring_full_cnt[5]: 0
mlo_ipc_ring_full_cnt[6]: 0
.....

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Signed-off-by: Maharaja Kennadyrajan <quic_mkenna@quicinc.com>
Signed-off-by: Roopni Devanathan <quic_rdevanat@quicinc.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250617051136.264193-2-quic_rdevanat@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>