LockOut: add events for Lock-Out / Tag-Out style devices

It is common practice for dangerous machinery to have a Lock-Out-Tag-Out
process (LOTO) to prevent the system from operating while the machine
is being worked on.  Servers may have Lock-Out style devices to prevent
either power or liquid cooling operations while the system is in
service.  For example, a switch may disable all liquid cooling pumps so
that the coolant does not pump onto the floor while coolant lines are
being repaired.

Add events to indicate the state of a Lock-Out style device.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I9ae6cfe02ed492c02e6f19725955ff6b0f0e7afa
diff --git a/yaml/xyz/openbmc_project/State/LockOut.events.yaml b/yaml/xyz/openbmc_project/State/LockOut.events.yaml
new file mode 100644
index 0000000..8e6b384
--- /dev/null
+++ b/yaml/xyz/openbmc_project/State/LockOut.events.yaml
@@ -0,0 +1,21 @@
+version: 1.0.0
+
+events:
+    - name: LockOutEnabled
+      metadata:
+          - name: Identifier
+            type: object_path
+            primary: true
+            description: The name or identifier of the Lock Out device.
+      en:
+          description: A Lock Out device has been enabled.
+          message: The Lock Out device '{Identifier}' has been enabled.
+    - name: LockOutDisabled
+      metadata:
+          - name: Identifier
+            type: object_path
+            primary: true
+            description: The name or identifier of the Lock Out device.
+      en:
+          description: A Lock Out device has been disabled.
+          message: The Lock Out device '{Identifier}' has been disabled.