drivers: wifi: Rename PS data retrieval options

The logic in the firmware is about exiting power save, the data
retrieval itself is pretty standardized.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

drivers/wifi/nrf700x/Kconfig

@@ -404,26 +404,25 @@ config NRF_WIFI_AP_DEAD_DETECT_TIMEOUT
  The number of seconds after which AP is declared dead if no beacons
  are received from the AP. Used to detect AP silently going down e.g., power off.
 
-choice NRF_WIFI_PS_DATA_RETRIEVAL_MECHANISM
- prompt "Power save data retrieval mechanism"
- default NRF_WIFI_PS_POLL_BASED_RETRIEVAL
+choice NRF_WIFI_PS_EXIT_STRATEGY
+ prompt "Power save exit strategy"
+ default NRF_WIFI_PS_INT_PS
  help
- Select the mechanism to retrieve buffered data from AP.
+ Select the power save exit strategy 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"
+config NRF_WIFI_PS_EXIT_EVERY_TIM
+ bool "Exit power save every time 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.
+ Exit power save every time to retrieve buffered data from AP. Entering back to
+ power save mode might take some time and power.
 
-config NRF_WIFI_QOS_NULL_BASED_RETRIEVAL
- bool "QoS null frame based mechanism to retrieve buffered data from AP"
+config NRF_WIFI_PS_INT_PS
+ bool "Exit power save based on an intelligent algorithm"
  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.
+ Exit power save based on an intelligent algorithm to retrieve buffered data from AP.
+ The algorithm tracks the buffered data at the AP and then dynamically decides
+ whether to stay in PS (for lower amount of buffered data) or exit PS (for higher
+ amount of buffered data).
 
 endchoice
 

drivers/wifi/nrf700x/osal/fw_if/umac_if/src/cmd.c

@@ -213,11 +213,11 @@ enum nrf_wifi_status umac_cmd_init(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
  umac_cmd_data->disable_beamforming = 1;
  }
 
-#if defined(CONFIG_NRF_WIFI_QOS_NULL_BASED_RETRIEVAL)
- umac_cmd_data->ps_exit_strategy = CUSTOM;
+#if defined(CONFIG_NRF_WIFI_PS_INT_PS)
+ umac_cmd_data->ps_exit_strategy = INT_PS;
 #else
  umac_cmd_data->ps_exit_strategy = EVERY_TIM;
-#endif /* CONFIG_NRF_WIFI_QOS_NULL_BASED_RETRIEVAL */
+#endif /* CONFIG_NRF_WIFI_PS_INT_PS */
 
  status = nrf_wifi_hal_ctrl_cmd_send(fmac_dev_ctx->hal_dev_ctx,
  umac_cmd,