named map should allow to use converters that handles multiple registers as input

[BlackZork]

This should be possible to define as mqtt topic:

  objects:
    - topic: test_state
      state:
        - name: sensor1
          register: tcptest.1.2
          register_type: input
          count: 2
          converter: std.int32()
        - name: sensor2
          register: tcptest.1.3
          register_type: input
          converter: std.divide(10,2)

output: { "sensor1": "<converted int32">, "sensor2": "divided val" }

Currently it works for divide but for int32 throw conf exception "count is disallowed".

[BlackZork]

Fixed in 4a0873fb9