configurations: catalina_pdb: add max/min value for vdrop sensor

We noticed that the vdrop sensor values ​​were not updating correctly
and we discovered this was due to incorrect MaxValue and MinValue
settings.
The value of the vdrop sensor is usually between 1 and -1 volts. Add
in0_Max and in0_Mix definitions for the vdrop sensor.

Tested results:
```
root@bmc:~# busctl introspect xyz.openbmc_project.PSUSensor /xyz/openbmc_project/sensors/voltage/PDB_POSITIVE_VDROP_VOLT_V xyz.openbmc_project.Sensor.Value
NAME                             TYPE      SIGNATURE RESULT/VALUE                             FLAGS
.MaxValue                        property  d         1                                        emits-change
.MinValue                        property  d         -1                                       emits-change
.Unit                            property  s         "xyz.openbmc_project.Sensor.Value.Unit.… emits-change
.Value                           property  d         0.104                                    emits-change writable
root@bmc:~# busctl introspect xyz.openbmc_project.PSUSensor /xyz/openbmc_project/sensors/voltage/PDB_RETURN_VDROP_VOLT_V xyz.openbmc_project.Sensor.Value
NAME                             TYPE      SIGNATURE RESULT/VALUE                             FLAGS
.MaxValue                        property  d         1                                        emits-change
.MinValue                        property  d         -1                                       emits-change
.Unit                            property  s         "xyz.openbmc_project.Sensor.Value.Unit.… emits-change
.Value                           property  d         0.107                                    emits-change writable
```

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: I37125808a772d0e12fcf93a56a161b573c09135a
diff --git a/configurations/catalina_pdb.json b/configurations/catalina_pdb.json
index 3aa5ace..1e4e589 100644
--- a/configurations/catalina_pdb.json
+++ b/configurations/catalina_pdb.json
@@ -388,6 +388,8 @@
             ],
             "Name": "PDB_POSITIVE_VDROP_INA238",
             "Type": "INA238",
+            "in0_Max": 1,
+            "in0_Min": -1,
             "in0_Name": "PDB_POSITIVE_VDROP_VOLT_V"
         },
         {
@@ -398,6 +400,8 @@
             ],
             "Name": "PDB_RETURN_VDROP_INA238",
             "Type": "INA238",
+            "in0_Max": 1,
+            "in0_Min": -1,
             "in0_Name": "PDB_RETURN_VDROP_VOLT_V"
         },
         {