[Nokia][platform] Modified Nokia device data to support midplane (#9914)

Added midplane_subnet in chassisdb.conf for interfaces-config.sh to create midplane interface in multi-asic namespaces.

Signed-off-by: Sakthivadivu Saravanaraj <sakthivadivu.saravanaraj@nokia.com>

device/nokia/x86_64-nokia_ixr7250e_36x400g-r0/chassisdb.conf

@@ -1,2 +1,3 @@
-chassis_db_address=10.0.5.16
+chassis_db_address=10.6.0.100
 chassis_internal_intfs=enp12s0f2,enp5s0f4,enp5s0f4.2
+midplane_subnet=10.6.0.0/16

device/nokia/x86_64-nokia_ixr7250e_36x400g-r0/platform_ndk.json

@@ -6,7 +6,7 @@
     },
     {
         "key": "midplane_subnet",
-        "stringval": "10.0.5.0"
+        "stringval": "10.6.0.0/16"
     },
     {
         "key": "midplane_monitor",

device/nokia/x86_64-nokia_ixr7250e_sup-r0/chassisdb.conf

@@ -1,4 +1,5 @@
 start_chassis_db=1
-chassis_db_address=10.0.5.16
+chassis_db_address=10.6.0.100
 lag_id_start=1
 lag_id_end=512
+midplane_subnet=10.6.0.0/16

device/nokia/x86_64-nokia_ixr7250e_sup-r0/platform_ndk.json

@@ -2,7 +2,7 @@
     "options": [
     {
         "key": "midplane_subnet",
-        "stringval": "10.0.5.0"
+        "stringval": "10.6.0.0/16"
     },
     {
         "key": "midplane_monitor",