wifi: ath12k: debugfs: radar simulation support

Create dfs_simulate_radar debugfs in ath12k debugfs directory.

Usage:

echo 1 > /sys/kernel/debug/ath12k/pci-0000:06:00.0/mac0/dfs_simulate_radar

This debugfs helps user to simulate RADAR interference in run time.

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

Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240320171305.655288-3-quic_rgnanase@quicinc.com