[Mellanox][Pcie] Fix issue on pcied with an id that contains only dec…

…imal digits was treated as a decimal number (#8309)

A device that contains only decimal digits was mistreated as a decimal integer resulting in failure to find it in the id to bus map.

platform/mellanox/mlnx-platform-api/sonic_platform/pcie.py

@@ -26,7 +26,7 @@ def get_pcie_check(self):
             id_conf = item_conf["id"]
             dev_conf = item_conf["dev"]
             fn_conf = item_conf["fn"]
-            bus_conf = self._device_id_to_bus_map.get(id_conf)
+            bus_conf = self._device_id_to_bus_map.get(str(id_conf))
             if bus_conf and self.check_pcie_sysfs(bus=int(bus_conf, base=16), device=int(dev_conf, base=16),
                                                   func=int(fn_conf, base=16)):
                 item_conf["result"] = "Passed"