wlcore/wl12xx: move runtime configuration struct to the lower driver

The configuration parameters vary with different chip families.  Some
of the parameters used only by some chip families, others should have
different value depending on the family.  Thus move the configuration
values from wlcore to wl12xx.
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wlcore/conf.h

@@ -1272,7 +1272,7 @@ struct conf_hangover_settings {
 	u8 window_size;
 };
 
-struct conf_drv_settings {
+struct wlcore_conf {
 	struct conf_sg_settings sg;
 	struct conf_rx_settings rx;
 	struct conf_tx_settings tx;

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -261,7 +261,7 @@ struct wl1271 {
 	struct wl1271_tx_hw_res_if *tx_res_if;
 
 	/* Current chipset configuration */
-	struct conf_drv_settings conf;
+	struct wlcore_conf conf;
 
 	bool sg_enabled;