ath11k: fix incorrect wmi param for configuring HE operation

WMI_VDEV_PARAM_TX_OFDMA_CPLEN has been added with incorrect enum
value. Fix the enum to represent WMI param for configuring HE
operation field.

This is applicable to firmwares under
https://github.com/kvalo/ath11k-firmware/tree/master/IPQ8074/hw2.0
https://github.com/kvalo/ath11k-firmware/tree/master/IPQ6018/hw1.0
https://github.com/kvalo/ath11k-firmware/tree/master/QCN9074/hw1.0

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01228-QCAHKSWPL_SILICONZ-1

Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201020183111.25458-3-pradeepc@codeaurora.org