hyp_ethernet_interface: add missing header

There was an assumption that an sdbus++ header file was implicitly
included, but the generated files are changing.  Explicitly add that
header.

Change-Id: I48519bfe5e07d648c26c339f8b59d6a70ee9f997
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
1 file changed