Add nanostack support for KW41Z

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

features/nanostack/mbed-mesh-api/mbed_lib.json

@@ -161,6 +161,9 @@
         },
         "NCS36510": {
             "mbed-mesh-api.heap-size": 14000
+        },
+        "KW41Z": {
+            "mbed-mesh-api.heap-size": 14000
         }
     }
 }

features/nanostack/sal-stack-nanostack/mbed_lib.json

@@ -16,6 +16,9 @@
         },
         "TB_SENSE_12": {
             "nanostack.configuration": "lowpan_router"
+        },
+        "KW41Z": {
+            "nanostack.configuration": "lowpan_router"
         }
     }
 }