ipmi volatile sensor: Add name pattern field

With openbmc commit b9717cebd3a26f94d2fe8767fcd4c2ddab2f05ab,
a new ipmi sensor field called sensorNamePattern was added to
the yaml files. Need it for the volatile sensor as well.

Change-Id: I423fc321f361faea383b9e3f350db1813ed46776
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/ipmi/openpower-ipmi-oem-sensor-inventory-mrw/openpower-config.yaml b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/ipmi/openpower-ipmi-oem-sensor-inventory-mrw/openpower-config.yaml
index 7ab428b..12f9bcd 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/ipmi/openpower-ipmi-oem-sensor-inventory-mrw/openpower-config.yaml
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/ipmi/openpower-ipmi-oem-sensor-inventory-mrw/openpower-config.yaml
@@ -19,6 +19,7 @@
   path: /org/open_power/control/volatile
   serviceInterface: org.freedesktop.DBus.Properties
   readingType: assertion
+  sensorNamePattern: nameLeaf
   interfaces:
     xyz.openbmc_project.Object.Enable:
       Enabled: