Merge pull request #1558 from rayx/fix_pci_device_test_name

pci_devices: fix test name

qemu/tests/cfg/pci_devices.cfg

@@ -20,7 +20,7 @@
             variants:
                 - bridge_bridge:
                     test_setup = "bridge->bridge->devices"
-                - bridge_switch_switch:
+                - root_switch_switch:
                     test_setup = "root->switch->switch->devices"
         - parallel_buses:
             variants: