domoticz: fix build on powerpc64le

domoticz: fix build on powerpc64le

There is an issue with powerpc64le and boost::uuids::random_generator on the
following line of code (from include/boost/uuid/seed_rng.hpp):
sha.process_bytes( (unsigned char const*)&std::rand, sizeof( void(*)() ) )
This line "inspects the first couple bytes (here eight) of the std::rand
function to seed some rng. Due to the implementation of process_bytes and
inlining happening, it seems that one of the loops therein uses &rand-1 as
some boundary, compiling with -O0 makes that reloc come out as 'rand + 0' and
the link will succeed."
See: https://bugzilla.suse.com/show_bug.cgi?id=955832#c7

Fixes:
 - http://autobuild.buildroot.org/results/454c0ea393615bae2d1b44be9920f25b5c49fc33

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>