Add auto init for Pico-W driver

src/config.h

@@ -174,6 +174,10 @@
 #define MG_SET_MAC_ADDRESS(mac)
 #endif
 
+#ifndef MG_SET_WIFI_CREDS
+#define MG_SET_WIFI_CREDS(ssid, pass)
+#endif
+
 #ifndef MG_ENABLE_TCPIP_PRINT_DEBUG_STATS
 #define MG_ENABLE_TCPIP_PRINT_DEBUG_STATS 0
 #endif

src/drivers/pico-w.h

@@ -12,4 +12,20 @@ struct mg_tcpip_driver_pico_w_data {
   char *pass;
 };
 
+#define MG_TCPIP_DRIVER_INIT(mgr)                                 \
+  do {                                                            \
+    static struct mg_tcpip_driver_pico_w_data driver_data_;       \
+    static struct mg_tcpip_if mif_;                               \
+    MG_SET_WIFI_CREDS(&driver_data_.ssid, &driver_data_.pass);    \
+    mif_.ip = MG_TCPIP_IP;                                        \
+    mif_.mask = MG_TCPIP_MASK;                                    \
+    mif_.gw = MG_TCPIP_GW;                                        \
+    mif_.driver = &mg_tcpip_driver_pico_w;                        \
+    mif_.driver_data = &driver_data_;                             \
+    mif_.recv_queue.size = 8192;                                  \
+    mif_.mac[0] = 2; /* MAC read from OTP at driver init */       \
+    mg_tcpip_init(mgr, &mif_);                                    \
+    MG_INFO(("Driver: pico-w, MAC: %M", mg_print_mac, mif_.mac)); \
+  } while (0)
+
 #endif