monitor:ibm,bonnell: Increase service mode delay

Change Bonnell's fan monitor service mode delay to 5 minutes.  This is
the delay that 2 rotors can be missing/faulted before a shutdown is
requested.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I89042efdca4d5dab7e8c58eff19d5604922e7b02
diff --git a/monitor/config_files/p10bmc/ibm,bonnell/config.json b/monitor/config_files/p10bmc/ibm,bonnell/config.json
index 259cea0..92e5b71 100644
--- a/monitor/config_files/p10bmc/ibm,bonnell/config.json
+++ b/monitor/config_files/p10bmc/ibm,bonnell/config.json
@@ -68,7 +68,7 @@
                 "type": "epow",
                 "cause": "nonfunc_fan_rotors",
                 "count": 2,
-                "service_mode_delay": 60,
+                "service_mode_delay": 300,
                 "meltdown_delay": 60
             }
         ]