phosphor-dbus-interfaces: srcrev bump f7616bc6be..688ed1228a

Andrew Geissler (1):
      add DiagnosticMode to host state

Cheng C Yang (1):
      Add D-BUS interfaces of SMBIOS MDR V2

(From meta-phosphor rev: 7f29b512e8763c2912fafae6e94304a783dae397)

Change-Id: I0e9a57125e34fc6d15aa08d4a2d92c6407f13729
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>