configurations: sbp1: Add RTC ADC sensor

On SBP1 the RTC battery voltage can be read using an ADC when
RTC_BATT_TEST is set high.

Expose the sensor reading by adding the configuration.

Tested: RTC battery voltage can be read.

Change-Id: I5c1da4f8943faad01f696469cc9f9c86ebdc9954
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
diff --git a/configurations/sbp1_baseboard.json b/configurations/sbp1_baseboard.json
index 1750522..9dc22f5 100644
--- a/configurations/sbp1_baseboard.json
+++ b/configurations/sbp1_baseboard.json
@@ -331,6 +331,48 @@
             "Type": "ADC"
         },
         {
+            "BridgeGpio": [
+                {
+                    "Name": "RTC_BATT_TEST",
+                    "Polarity": "High",
+                    "SetupTime": 0.125
+                }
+            ],
+            "Index": 10,
+            "MaxValue": 3.57,
+            "MinValue": 0,
+            "Name": "VBAT_RTC",
+            "PollRate": 86400,
+            "ScaleFactor": 1.0,
+            "Thresholds": [
+                {
+                    "Direction": "greater than",
+                    "Name": "upper critical",
+                    "Severity": 1,
+                    "Value": 3.556
+                },
+                {
+                    "Direction": "greater than",
+                    "Name": "upper non critical",
+                    "Severity": 0,
+                    "Value": 3.458
+                },
+                {
+                    "Direction": "less than",
+                    "Name": "lower critical",
+                    "Severity": 1,
+                    "Value": 2.212
+                },
+                {
+                    "Direction": "less than",
+                    "Name": "lower non critical",
+                    "Severity": 0,
+                    "Value": 2.31
+                }
+            ],
+            "Type": "ADC"
+        },
+        {
             "Address": "0x40",
             "Bus": "58",
             "Labels": [