fix(tools): fix ld_non_contiguous_memory test includes

tools/test_apps/build_system/ld_non_contiguous_memory/main/test_app_main.c

@@ -5,6 +5,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <inttypes.h>
 
 extern int _bss_start_low, _bss_start_high;