Fix boost process call for SEL Clear

The boost::process::system call to journalctl for SEL clear was failing
from not finding the 'journalctl' command.  This change add a
boost::process::search_path to search for the full path to journalctl
which fixes the system call.

Tested: Before the change SEL Clear returned 0xFF.  After the change
SEL Clear returns successfully and executes the journalctl call.

Change-Id: I03510608a705c034638a1cabf71f5c2ed24b14ec
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
1 file changed