[nrf fromtree] drivers: wifi: Option for PS data retrieval

SHEL-2947] Option to set either PS-poll or QoS null frame based
power save data retrieval mechanism.

Signed-off-by: Ajay Parida <[email protected]>
(cherry picked from commit 41e29c6)

Author: ajayparida

drivers/wifi/nrfwifi/Kconfig.nrfwifi

@@ -700,4 +700,27 @@ config NRF_WIFI_PATCHES_EXT_FLASH_XIP
 	help
 	  Select this option to enable external flash XIP for nRF70 firmware patches
 
+choice NRF_WIFI_PS_DATA_RETRIEVAL_MECHANISM
+	prompt "Power save data retrieval mechanism"
+	default NRF_WIFI_PS_POLL_BASED_RETRIEVAL
+	help
+	  Select the mechanism to retrieve buffered data from AP.
+
+config NRF_WIFI_PS_POLL_BASED_RETRIEVAL
+	bool "PS-Poll frame based mechanism to retrieve buffered data from AP"
+	help
+	  When AP notifies about availability of buffered data, the STA stays in power save
+	  and retrieves the frames one-by-one, this conserved more power but adds latency
+	  to the traffic. Ideal for minimum number of frames.
+
+config NRF_WIFI_QOS_NULL_BASED_RETRIEVAL
+	bool "QoS null frame based mechanism to retrieve buffered data from AP"
+	help
+	  When AP notifies about availability of buffered data, the STA comes out of
+	  power save and then AP can deliver all buffered frames without any additional
+	  overhead or latency, but STA enters power save after a delay costing more power
+	  depending on the delay. Ideal for heavy buffered traffic.
+
+endchoice
+
 endif # WIFI_NRF70