single_driver_install.cfg: add install pvpanic device

Add driver install case with pvpanic device
Signed-off-by: NYu Wang <wyu@redhat.com>

qemu/tests/cfg/single_driver_install.cfg

@@ -71,3 +71,7 @@
             balloon = balloon0
             balloon_dev_devid = balloon0
             balloon_dev_add_bus = yes
+        - with_pvpanic:
+            no Host_RHEL.m6
+            driver_name = pvpanic
+            device_name = "QEMU PVPanic Device"