qcacmn: get NAPI scale factor through ini configuration

NAPI scale factor should be configured based on the board
type. for example Hawkeye could have a different scale factor
compared to Alder.

CRs-Fixed: 3212330
Change-Id: Ie0bad6aade9ca9379997aa974154f9fb903ab93e

wlan_cfg/wlan_cfg.h

@@ -427,6 +427,7 @@ struct wlan_cfg_dp_soc_ctxt {
 #endif
 	uint8_t mpdu_retry_threshold_1;
 	uint8_t mpdu_retry_threshold_2;
+	uint8_t napi_scale_factor;
 };
 
 /**
@@ -2156,4 +2157,14 @@ wlan_cfg_get_tx_capt_max_mem(struct wlan_cfg_dp_soc_ctxt *cfg)
 }
 #endif /* WLAN_TX_PKT_CAPTURE_ENH */
 
+/**
+ * wlan_cfg_get_napi_scale_factor() - Get napi scale factor
+ *
+ *
+ * @cfg: soc configuration context
+ *
+ * Return: napi scale factor
+ */
+uint8_t wlan_cfg_get_napi_scale_factor(struct wlan_cfg_dp_soc_ctxt *cfg);
+
 #endif /*__WLAN_CFG_H*/