Add mux entry for 1S4U systems

The commit fixes the missing entries for mux in 1S4U system JSON.

Change-Id: Ia3e73d00d3bce3d8855b32a932319d187c7869fc
Signed-off-by: Sunny Srivastava <sunnsr25@in.ibm.com>
diff --git a/config/ibm/50001002.json b/config/ibm/50001002.json
index a074100..6e9ae63 100644
--- a/config/ibm/50001002.json
+++ b/config/ibm/50001002.json
@@ -24,6 +24,18 @@
             }
         }
     },
+    "muxes": [
+        {
+            "i2bus": "6",
+            "deviceaddress": "0xE0",
+            "holdidlepath": "/sys/bus/i2c/drivers/pca954x/6-0070/hold_idle"
+        },
+        {
+            "i2bus": "11",
+            "deviceaddress": "0xE0",
+            "holdidlepath": "/sys/bus/i2c/drivers/pca954x/11-0070/hold_idle"
+        }
+    ],
     "frus": {
         "/sys/bus/i2c/drivers/at24/8-0050/eeprom": [
             {