soc: xtensa: esp32s3: Add external ram noinit section

Add section to allocate memory of WiFi and NET stack in SPIRAM

Signed-off-by: Lucas Tamborrino <[email protected]>

soc/xtensa/espressif_esp32/esp32s3/default.ld

@@ -233,9 +233,20 @@ SECTIONS
   {
     _ext_ram_bss_start = ABSOLUTE(.);
     *(.ext_ram.bss*)
-    . = ALIGN(0x10000);
+    . = ALIGN(4);
     _ext_ram_bss_end = ABSOLUTE(.);
   } > ext_ram_seg
+
+  .ext_ram_noinit (NOLOAD) :
+  {
+#if defined(CONFIG_ESP32_WIFI_NET_ALLOC_SPIRAM)
+    *libdrivers__wifi.a:(.noinit .noinit.*)
+    *libsubsys__net__l2__ethernet.a:(.noinit .noinit.*)
+    *libsubsys__net__lib__config.a:(.noinit .noinit.*)
+    *libsubsys__net__ip.a:(.noinit .noinit.*)
+    *libsubsys__net.a:(.noinit .noinit.*)
+#endif
+  } > ext_ram_seg
 #endif
 
   /* Send .iram0 code to iram */