Add power on error

This error will be created when PGOOD doesn't
come up during a power on.

Change-Id: I963ec22651598bdb14405e41bcf314c7bbab7f6c
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/xyz/openbmc_project/Power/Fault.errors.yaml b/xyz/openbmc_project/Power/Fault.errors.yaml
index e646d02..e428494 100644
--- a/xyz/openbmc_project/Power/Fault.errors.yaml
+++ b/xyz/openbmc_project/Power/Fault.errors.yaml
@@ -1,2 +1,4 @@
 - name: Shutdown
   description: A power off was issued because a power fault was detected
+- name: PowerOnFailure
+  description: System power failed to turn on