add the column of CPU Platform in device list (#777)

* add the column of CPU Platform in device list

* Update api.js

* Update solo.js

* Update devutil.js

* Update device-column-service.js

* Update device-list-controller.js

lib/db/api.js

@@ -322,6 +322,7 @@ dbapi.saveDeviceIdentity = function(serial, identity) {
   , display: identity.display
   , phone: identity.phone
   , product: identity.product
+  , cpuPlatform: identity.cpuPlatform
   }))
 }