pulseview: needs boost atomic/date_time as well

pulseview: needs boost atomic/date_time as well

Fixes:
http://autobuild.buildroot.net/results/15e/15ebb8bc2b50080c37c635462a5faf63f038f014/
http://autobuild.buildroot.net/results/2ac/2ac1c2fb79a46605be829ddfd44db671ba229f26/

From the cmake log:

  Could not find the following Boost libraries:

          boost_date_time
          boost_atomic

  Some (but not all) of the required Boost libraries were found.  You may
  need to install these additional Boost libraries.  Alternatively, set
  BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT
  to the location of Boost.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>