dbus-sensors: add Pascals to allowlist for units

This adds Pascals allowlist of the units a sensor can measure,
to keep in sync with phosphor-dbus-interfaces/yaml/xyz/openbmc_project \
/Sensor/Value.interface.yaml
This relates to 43729: phosphor-dbus-interfaces: Add enum value Pascals
https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-dbus-interfaces \
/+/43729

Signed-off-by: Bruce Mitchell <bruce.mitchell@linux.vnet.ibm.com>
Change-Id: I0af0231aca90841032377a88703b51a7f5f96cf3
diff --git a/include/SensorPaths.hpp b/include/SensorPaths.hpp
index 023d615..fa1c3e5 100644
--- a/include/SensorPaths.hpp
+++ b/include/SensorPaths.hpp
@@ -25,6 +25,8 @@
 constexpr const char* unitPercent =
     "xyz.openbmc_project.Sensor.Value.Unit.Percent";
 constexpr const char* unitCFM = "xyz.openbmc_project.Sensor.Value.Unit.CFM";
+constexpr const char* unitPascals =
+    "xyz.openbmc_project.Sensor.Value.Unit.Pascals";
 
 std::string getPathForUnits(const std::string& units);