Move dbus connection into base sensor object

This seems common through most sensors, might as
well move it for consistency.

Tested: sensors operational as normal

Change-Id: I4e6c55cbb7171ee51700015f8c2ef8c05c90fb4e
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/src/ADCSensor.cpp b/src/ADCSensor.cpp
index aa7b50e..7afb2ab 100644
--- a/src/ADCSensor.cpp
+++ b/src/ADCSensor.cpp
@@ -56,7 +56,7 @@
     Sensor(boost::replace_all_copy(sensorName, " ", "_"),
            std::move(_thresholds), sensorConfiguration,
            "xyz.openbmc_project.Configuration.ADC", maxReading, minReading,
-           readState),
+           conn, readState),
     std::enable_shared_from_this<ADCSensor>(), objServer(objectServer),
     inputDev(io, open(path.c_str(), O_RDONLY)), waitTimer(io), path(path),
     scaleFactor(scaleFactor), bridgeGpio(std::move(bridgeGpio)),