Shutdown thermal event due to ambient

Add a shutdown thermal event error due to a high ambient temperature.

Change-Id: I6d1ee3f64dc72758c6b20479ae84ccdf2b4ae369
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/xyz/openbmc_project/State/Shutdown/ThermalEvent.errors.yaml b/xyz/openbmc_project/State/Shutdown/ThermalEvent.errors.yaml
index b711247..21dde3a 100644
--- a/xyz/openbmc_project/State/Shutdown/ThermalEvent.errors.yaml
+++ b/xyz/openbmc_project/State/Shutdown/ThermalEvent.errors.yaml
@@ -3,3 +3,6 @@
 
 - name: GPU
   description: The system shut down due to a GPU overtemp.
+
+- name: Ambient
+  description: System shutdown due to a high ambient temperature.