Fix power match

Power should be capitalized

Tested-by: Ipmb sensor had readings after reboot

Change-Id: I2bf64903ace851fa7b1aff58445c6ddf6457c712
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/src/Utils.cpp b/src/Utils.cpp
index 52f5d1d..cd7baa4 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -142,7 +142,7 @@
         static_cast<sdbusplus::bus::bus&>(*conn),
         "type='signal',interface='org.freedesktop.DBus.Properties',path_"
         "namespace='/xyz/openbmc_project/Chassis/Control/"
-        "power0',arg0='xyz.openbmc_project.Chassis.Control.Power'",
+        "Power0',arg0='xyz.openbmc_project.Chassis.Control.Power'",
         eventHandler);
 
     conn->async_method_call(