wifi: ath12k: Enable MLO for single split-phy PCI device

wifi: ath12k: Enable MLO for single split-phy PCI device

The single split-phy PCI device can perform multi-link operation (MLO)
within its own radio, and the MLO-supporting firmware also supports MLO
for split-phy PCI devices.

Therefore, enable MLO for the single split-phy PCI device.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Signed-off-by: Aaradhana Sahu <quic_aarasahu@quicinc.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250207050327.360987-4-quic_aarasahu@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>