Export new header file for Host Event errors

Export a manually generated header file that contains the error
information to log a host event error. This is temporary
the openpower-dbus-interfaces repo exports the yaml files and
the phosphor-logging repo parses the exception header files.

The header file also contains the info generated by the lookup
template.

Change-Id: Iea02ffd809e3815f34bb4a1b5c89639d2207dd43
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
2 files changed