package/domoticz: select boost atomic

package/domoticz: select boost atomic

domoticz does not use Boost::atomic but cmake is so "smart" that it
(wrongly) assumes that Boost::thread depends on Boost:date_time and
Boost::atomic since boost version 1.54:

set(_Boost_THREAD_DEPENDENCIES chrono date_time atomic)

Extracted from:
 - https://gitlab.kitware.com/cmake/cmake/-/blob/master/Modules/FindBoost.cmake#L1113

As we can't patch every cmake on the field, just select boost atomic

It should be noted that build failures are only raised since commit
8a46b41b4a5d1c2f5ebefd7fc23fec7e8ba0598c as this commit drop the patch
that was decreasing cmake version but also removing:

target_link_libraries(domoticz Boost::thread Boost::system)

Fixes:
 - http://autobuild.buildroot.org/results/4306c0a725ed9a34bd55550df428866db6e4f052
 - http://autobuild.buildroot.org/results/2478e7a2ec1c63dcc2b36d29a39004468b230211

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>