sandbox: Move CONFIG_SYS_VSNPRINTF to Kconfig
Move this over to Kconfig and tidy up.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/Kconfig b/lib/Kconfig
index c9d2767..d7fd219 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -27,6 +27,15 @@
get_timer() must operate in milliseconds and this option must be
set to 1000.
+config SYS_VSNPRINTF
+ bool "Enable safe version of sprintf()"
+ help
+ Since sprintf() can overflow its buffer, it is common to use
+ snprintf() instead, which knows the buffer size and can avoid
+ overflow. However, this does increase code size slightly (for
+ Thumb-2, about 420 bytes). Enable this option for safety when
+ using sprintf() with data you do not control.
+
source lib/rsa/Kconfig
menu "Hashing Support"