monitor:cnfgs:Bonnell: Update tach 1 equation

The Bonnell system will support fans from two different vendors where
the equation:  "tach1_rpm = (target_rpm * factor) + offset"  is slightly
different between the two.

Change the factor and offset values to one that will work for both.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: Iffb3f597f4d30b3c3b76edf8950702c0517a59f2
diff --git a/monitor/config_files/p10bmc/com.ibm.Hardware.Chassis.Model.Bonnell/config.json b/monitor/config_files/p10bmc/com.ibm.Hardware.Chassis.Model.Bonnell/config.json
index 92e5b71..6d1427c 100644
--- a/monitor/config_files/p10bmc/com.ibm.Hardware.Chassis.Model.Bonnell/config.json
+++ b/monitor/config_files/p10bmc/com.ibm.Hardware.Chassis.Model.Bonnell/config.json
@@ -21,8 +21,8 @@
                     "name": "fan0_1",
                     "threshold": 30,
                     "has_target": false,
-                    "factor": 0.625,
-                    "offset": 1100
+                    "factor": 0.685,
+                    "offset": 700
                 }
             ]
         },
@@ -47,8 +47,8 @@
                     "name": "fan1_1",
                     "threshold": 30,
                     "has_target": false,
-                    "factor": 0.625,
-                    "offset": 1100
+                    "factor": 0.685,
+                    "offset": 700
                 }
             ]
         }