Adjust some log levels in udev driver

Most of te VIR_INFO calls in the udev driver are only relevant
to developers so can switch to VIR_DEBUG. Failure to initialize
libpciaccess though is a fatal error

* src/node_device/node_device_udev.c: Adjust log levels

src/node_device/node_device_udev.c

@@ -116,7 +116,7 @@ static int udevGetDeviceProperty(struct udev_device *udev_device,
 
     udev_value = udev_device_get_property_value(udev_device, property_key);
     if (udev_value == NULL) {
-        VIR_INFO(_("udev reports device '%s' does not have property '%s'"),
+        VIR_DEBUG("udev reports device '%s' does not have property '%s'",
                   udev_device_get_sysname(udev_device), property_key);
         ret = PROPERTY_MISSING;
         goto out;
@@ -205,7 +205,7 @@ static int udevGetDeviceSysfsAttr(struct udev_device *udev_device,
 
     udev_value = udev_device_get_sysattr_value(udev_device, attr_name);
     if (udev_value == NULL) {
-        VIR_INFO(_("udev reports device '%s' does not have sysfs attr '%s'"),
+        VIR_DEBUG("udev reports device '%s' does not have sysfs attr '%s'",
                   udev_device_get_sysname(udev_device), attr_name);
         ret = PROPERTY_MISSING;
         goto out;
@@ -950,7 +950,7 @@ static int udevKludgeStorageType(virNodeDeviceDefPtr def)
 {
     int ret = -1;
 
-    VIR_INFO("Could not find definitive storage type for device "
+    VIR_DEBUG("Could not find definitive storage type for device "
               "with sysfs path '%s', trying to guess it",
               def->sysfs_path);
 
@@ -963,7 +963,7 @@ static int udevKludgeStorageType(virNodeDeviceDefPtr def)
     }
 
     if (ret != 0) {
-        VIR_INFO("Could not determine storage type for device "
+        VIR_DEBUG("Could not determine storage type for device "
                   "with sysfs path '%s'", def->sysfs_path);
     } else {
         VIR_DEBUG("Found storage type '%s' for device "
@@ -1062,7 +1062,7 @@ static int udevProcessStorage(struct udev_device *device,
     } else if (STREQ(def->caps->data.storage.drive_type, "floppy")) {
         ret = udevProcessFloppy(device, def);
     } else {
-        VIR_INFO("Unsupported storage type '%s'",
+        VIR_DEBUG("Unsupported storage type '%s'",
                   def->caps->data.storage.drive_type);
         goto out;
     }
@@ -1141,7 +1141,7 @@ static int udevGetDeviceType(struct udev_device *device,
         goto out;
     }
 
-    VIR_INFO("Could not determine device type for device "
+    VIR_DEBUG("Could not determine device type for device "
               "with sysfs path '%s'",
               udev_device_get_sysname(device));
     ret = -1;
@@ -1209,7 +1209,7 @@ static int udevRemoveOneDevice(struct udev_device *device)
                   dev->def->name, name);
         virNodeDeviceObjRemove(&driverState->devs, dev);
     } else {
-        VIR_INFO("Failed to find device to remove that has udev name '%s'",
+        VIR_DEBUG("Failed to find device to remove that has udev name '%s'",
                   name);
         ret = -1;
     }
@@ -1237,7 +1237,7 @@ static int udevSetParent(struct udev_device *device,
 
         parent_sysfs_path = udev_device_get_syspath(parent_device);
         if (parent_sysfs_path == NULL) {
-            VIR_INFO("Could not get syspath for parent of '%s'",
+            VIR_DEBUG("Could not get syspath for parent of '%s'",
                       udev_device_get_syspath(parent_device));
         }
 
@@ -1350,7 +1350,7 @@ static int udevProcessDeviceListEntry(struct udev *udev,
 
     if (device != NULL) {
         if (udevAddOneDevice(device) != 0) {
-            VIR_INFO("Failed to create node device for udev device '%s'",
+            VIR_DEBUG("Failed to create node device for udev device '%s'",
                       name);
         }
         ret = 0;
@@ -1598,7 +1598,7 @@ static int udevDeviceMonitorStartup(int privileged ATTRIBUTE_UNUSED)
 
     if ((pciret = pci_system_init()) != 0) {
         char ebuf[256];
-        VIR_INFO("Failed to initialize libpciaccess: %s",
+        VIR_ERROR(_("Failed to initialize libpciaccess: %s"),
                   virStrerror(pciret, ebuf, sizeof ebuf));
         ret = -1;
         goto out;