configs: Modify poll rate on Bellavista

The sensors in the PCIe region don't need to be read faster than once a
second.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I38eaf3a4b005324c37bd249b5d0cf0b0294c3919
diff --git a/configurations/bellavista.json b/configurations/bellavista.json
index 7654ee6..9ff6835 100644
--- a/configurations/bellavista.json
+++ b/configurations/bellavista.json
@@ -32,12 +32,14 @@
             "Address": "0x48",
             "Bus": 8,
             "Name": "PCIE 0 Temp",
+            "PollRate": 1,
             "Type": "TMP75"
         },
         {
             "Address": "0x49",
             "Bus": 8,
             "Name": "PCIE 1 Temp",
+            "PollRate": 1,
             "Type": "TMP75"
         },
         {