Bug fix property and methods of BackendV2Converter (#9502)

* fix property and methods of BackendV2Converter

* add reno

* Update releasenotes/notes/fix-backendv2converter-de342352cf882494.yaml

* Update releasenotes/notes/fix-backendv2converter-de342352cf882494.yaml

---------

Co-authored-by: Naoki Kanazawa <nkanazawa1989@gmail.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit df258d4)

qiskit/providers/backend_compat.py

@@ -266,19 +266,19 @@ def dtm(self) -> float:
 
     @property
     def meas_map(self) -> List[List[int]]:
-        return self._config.dt
+        return self._config.meas_map
 
     def drive_channel(self, qubit: int):
-        self._config.drive(qubit)
+        return self._config.drive(qubit)
 
     def measure_channel(self, qubit: int):
-        self._config.measure(qubit)
+        return self._config.measure(qubit)
 
     def acquire_channel(self, qubit: int):
-        self._config.acquire(qubit)
+        return self._config.acquire(qubit)
 
     def control_channel(self, qubits: Iterable[int]):
-        self._config.control(qubits)
+        return self._config.control(qubits)
 
     def run(self, run_input, **options):
         return self._backend.run(run_input, **options)

releasenotes/notes/fix-backendv2converter-de342352cf882494.yaml

@@ -0,0 +1,9 @@
+---
+fixes:
+  - |
+    Fixed a bug of wrong return value of the method :meth:`BackendV2Converter.meas_map` 
+    that had returned backend `dt` instead.
+  - |
+    Fixed a bug of missing return value from methods :meth:`BackendV2Converter.drive_channel`, 
+    :meth:`BackendV2Converter.measure_channel`, :meth:`BackendV2Converter.acquire_channel` and 
+    :meth:`BackendV2Converter.control_channel`.