wifi: ath12k: fix tx power, max reg power update to firmware

Currently, when the vdev start WMI cmd is sent from host, vdev related
parameters such as max_reg_power, max_power, and max_antenna_gain are
multiplied by 2 before being sent to the firmware. This is incorrect
because the firmware uses 1 dBm steps for power calculations.

This leads to incorrect power values being used in the firmware and
radio, potentially causing incorrect behavior.

Fix the update of max_reg_power, max_power, and max_antenna_gain values
in the ath12k_mac_vdev_start_restart function, ensuring accurate
power settings in the firmware by sending these values as-is,
without multiplication.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00214-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: Sathishkumar Muruganandam <[email protected]>
Signed-off-by: Santhosh Ramesh <[email protected]>
Fixes: d889913 ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Acked-by: Kalle Valo <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jeff Johnson <[email protected]>

Author: Sathishkumar Muruganandam

drivers/net/wireless/ath/ath12k/mac.c

@@ -8725,9 +8725,9 @@ ath12k_mac_vdev_start_restart(struct ath12k_link_vif *arvif,
 							chandef->chan->band,
 							ahvif->vif->type);
 	arg.min_power = 0;
-	arg.max_power = chandef->chan->max_power * 2;
-	arg.max_reg_power = chandef->chan->max_reg_power * 2;
-	arg.max_antenna_gain = chandef->chan->max_antenna_gain * 2;
+	arg.max_power = chandef->chan->max_power;
+	arg.max_reg_power = chandef->chan->max_reg_power;
+	arg.max_antenna_gain = chandef->chan->max_antenna_gain;
 
 	arg.pref_tx_streams = ar->num_tx_chains;
 	arg.pref_rx_streams = ar->num_rx_chains;