Cast int64_t values to long long before print.

So the "%lld" format will not have Clang warnings in 32-bit and
64-bit builds. Alternative is to use PRId64.

Change-Id: I5fafc506fae012748a04ec261af62d9d13475cde
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>