Disable LTO to avoid undefined __stack_chk_guard symbol
problem. "externally_visible" attribute could be a fix for
that but it is not known to our LLVM.
Signed-off-by: NZbigniew Bodek <zbigniew.bodek@huawei.com>
Change-Id: I39e0ccaee5897c696a7a9a235e433cf9113853ce