drivers: wifi: esp: Convert driver to new DT device macros

Convert esp driver:

    NET_DEVICE_OFFLOAD_INIT -> NET_DEVICE_DT_INST_OFFLOAD_DEFINE

DT label is already required, so use it and drop CONFIG_WIFI_ESP_NAME
option.

Signed-off-by: Marcin Niestroj <[email protected]>

Author: mniestroj

drivers/wifi/esp/Kconfig.esp

@@ -12,10 +12,6 @@ menuconfig WIFI_ESP
 
 if WIFI_ESP
 
-config WIFI_ESP_NAME
-	string "Driver name"
-	default "esp-wifi-modem"
-
 config WIFI_ESP_RX_STACK_SIZE
 	int "Stack size for the Espressif esp wifi driver RX thread"
 	default 1024

drivers/wifi/esp/esp.c

@@ -1154,7 +1154,7 @@ static int esp_init(const struct device *dev)
 	return ret;
 }
 
-NET_DEVICE_OFFLOAD_INIT(wifi_esp, CONFIG_WIFI_ESP_NAME,
-			esp_init, device_pm_control_nop, &esp_driver_data, NULL,
-			CONFIG_WIFI_INIT_PRIORITY, &esp_api,
-			ESP_MTU);
+NET_DEVICE_DT_INST_OFFLOAD_DEFINE(0, esp_init, device_pm_control_nop,
+				  &esp_driver_data, NULL,
+				  CONFIG_WIFI_INIT_PRIORITY, &esp_api,
+				  ESP_MTU);