As mbedtls installs this rather generically-named /usr/bin/hello binary,
it conflicts with the one provided by lmbench, hence set it up as an
alternative to avoid conflicts when both are installed to rootfs or SDK.
Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>