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.json b/configurations/yosemite4.json
index bad6734..747e282 100644
--- a/configurations/yosemite4.json
+++ b/configurations/yosemite4.json
@@ -576,6 +576,25 @@
             ]
         },
         {
+            "Class": "temp",
+            "Inputs": [
+                "MGNT_TEMP_C"
+            ],
+            "Name": "Stepwise_MGNT_TEMP",
+            "NegativeHysteresis": 0,
+            "Output": [
+                10.0
+            ],
+            "PositiveHysteresis": 0,
+            "Reading": [
+                10.0
+            ],
+            "Type": "Stepwise",
+            "Zones": [
+                "Zone 1"
+            ]
+        },
+        {
             "Address": "0x48",
             "Bus": 34,
             "Name": "MGNT_TEMP_C",