If a source code file depends on a configuration option,
that, in turn, depends on a compiler, this file has to
include toolchain.h.
toolchain.h includes a compiler specific header file that
sets the proper configuration option.
Change-Id: I7c9002522a8c6d6fd945e27a450ebe46ba9d4892
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>