feat(eppp): Make UART port number configurable

Author: david-cermak

components/esp_wifi_remote/Kconfig.rpc.in

@@ -16,6 +16,13 @@ endchoice
 
     if ESP_WIFI_REMOTE_LIBRARY_EPPP
 
+        config ESP_WIFI_REMOTE_EPPP_UART_PORT
+            int "UART port number"
+            default 1
+            range 0 3
+            help
+                UART Port number.
+
         config ESP_WIFI_REMOTE_EPPP_UART_TX_PIN
             int "TXD Pin Number"
             default 10

components/esp_wifi_remote/eppp/eppp_init.c

@@ -16,6 +16,7 @@ __attribute__((weak)) esp_netif_t *wifi_remote_eppp_init(eppp_type_t role)
     config.transport = EPPP_TRANSPORT_UART;
     config.uart.tx_io = CONFIG_ESP_WIFI_REMOTE_EPPP_UART_TX_PIN;
     config.uart.rx_io = CONFIG_ESP_WIFI_REMOTE_EPPP_UART_RX_PIN;
+    config.uart.port = CONFIG_ESP_WIFI_REMOTE_EPPP_UART_PORT;
     config.ppp.netif_description = CONFIG_ESP_WIFI_REMOTE_EPPP_NETIF_DESCRIPTION;
     config.ppp.netif_prio = CONFIG_ESP_WIFI_REMOTE_EPPP_NETIF_PRIORITY;
     return eppp_open(role, &config, portMAX_DELAY);