configurations: yosemite4: adjust fan control configs

Adjust fan control configs according to the test result from thermal
team.

Change-Id: I679579b8ee85b6ff5748af338aec67a6839bb95d
Signed-off-by: Ricky CX Wu <ricky.cx.wu.wiwynn@gmail.com>
diff --git a/configurations/yosemite4_sentineldome_t1.json b/configurations/yosemite4_sentineldome_t1.json
index 251ca22..708d445 100644
--- a/configurations/yosemite4_sentineldome_t1.json
+++ b/configurations/yosemite4_sentineldome_t1.json
@@ -131,7 +131,7 @@
             "Name": "Stepwise_MB_INLET_OUTLET_TEMP_Slot $bus % 15",
             "NegativeHysteresis": 0,
             "Output": [
-                20.0
+                10.0
             ],
             "PositiveHysteresis": 0,
             "Reading": [