ath10k: workaround qca6174 sta powersave issue

qca6184 WLAN.RM.2.0-00073 has a bug in sta
powersave state machine and requires peer param to
be poked to enable the powersave.

Calling this unconditionally should be safe for
other chips/firmwares.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h
index 28c1822..adf935b 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.h
+++ b/drivers/net/wireless/ath/ath10k/wmi.h
@@ -4445,7 +4445,8 @@
 	WMI_PEER_AUTHORIZE  = 0x3,
 	WMI_PEER_CHAN_WIDTH = 0x4,
 	WMI_PEER_NSS        = 0x5,
-	WMI_PEER_USE_4ADDR  = 0x6
+	WMI_PEER_USE_4ADDR  = 0x6,
+	WMI_PEER_DUMMY_VAR  = 0xff, /* dummy parameter for STA PS workaround */
 };
 
 struct wmi_peer_set_param_cmd {