sandbox: Fix LTO to work with STACKPROTECTOR

Add the STACKPROTECTOR symbols to the script that generates the
symbols that should not be removed by the use of LTO when linking
a shared object. This prevents a fail to build due to link errors.

https://source.denx.de/u-boot/u-boot/-/issues/35

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed