openssl: Build with -fno-strict-aliasing

OpenSSL contains numerous aliasing violations, in places
that are hard to fix without breaking API and ABI.
Disable the optimization locally so we can build other
parts of the tree with strict-aliasing

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Merge branch 'linaro' into HEAD