idf_esp32_letter_shell_patch

diff --git a/components/esp_system/ld/esp32/sections.ld.in b/components/esp_system/ld/esp32/sections.ld.in
index c2a6c66c5b..815af6e253 100644
--- a/components/esp_system/ld/esp32/sections.ld.in
+++ b/components/esp_system/ld/esp32/sections.ld.in
@@ -321,6 +321,12 @@ SECTIONS
     *(.tbss.*)
     _thread_local_end = ABSOLUTE(.);
     . = ALIGN(4);
+
+    _shell_command_start = ABSOLUTE(.);
+    KEEP (*(shellCommand))
+    _shell_command_end = ABSOLUTE(.);
+    . = ALIGN(4);
+    
   } >default_rodata_seg
 
   _flash_rodata_align = ALIGNOF(.flash.rodata);