Minor linker script additions

esp-hal-common/ld/sections/rodata.x

@@ -6,6 +6,7 @@ SECTIONS {
     _rodata_start = ABSOLUTE(.);
     . = ALIGN (4);
     *(.rodata .rodata.*)
+    *(.srodata .srodata.*)
     _rodata_end = ABSOLUTE(.);
   } > RODATA
 

esp32-hal/ld/link-esp32.x

@@ -28,6 +28,13 @@ INCLUDE "rtc_slow.x"
 INCLUDE "external.x"
 /* End of Shared sections */
 
+// an uninitialized section for use as the wifi-heap in esp-wifi
+SECTIONS {
+    .dram2_uninit (NOLOAD) : ALIGN(4) {
+        *(.dram2_uninit)
+    } > dram2_seg
+}
+
 _heap_end = ABSOLUTE(ORIGIN(dram_seg))+LENGTH(dram_seg) - 2*STACK_SIZE;
 
 _stack_start_cpu1 = _heap_end;