loader: add symbols for Arduino_JSON library

Author: hajimef

loader/llext_exports.c

@@ -17,6 +17,8 @@ EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(strncmp);
 EXPORT_SYMBOL(strncpy);
 EXPORT_SYMBOL(strcasecmp);
+EXPORT_SYMBOL(strtod);
+EXPORT_SYMBOL(strtol);
 EXPORT_SYMBOL(strtoul);
 EXPORT_SYMBOL(strcmp);
 EXPORT_SYMBOL(strlen);
@@ -238,6 +240,7 @@ EXPORT_SYMBOL(snprintf);
 EXPORT_SYMBOL(cbvprintf);
 EXPORT_SYMBOL(vsnprintf);
 FORCE_EXPORT_SYM(abort);
+EXPORT_SYMBOL(sscanf);
 
 #if defined(CONFIG_RING_BUFFER)
 EXPORT_SYMBOL(ring_buf_get);
@@ -280,6 +283,7 @@ FORCE_EXPORT_SYM(__aeabi_dcmpge);
 
 #if defined (CONFIG_CPP)
 FORCE_EXPORT_SYM(__cxa_pure_virtual);
+FORCE_EXPORT_SYM(__assert_no_args);
 #endif
 
 #if defined(CONFIG_BOARD_ARDUINO_UNO_Q)