fp5280g2: Add inventory associations

Add the inventory association definitions for fp5280g2.
With these, phosphor-inventory will create the
org.openbmc.Associations interface on the specified
inventory paths such that the object mapper will create
the association D-Bus objects.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I9a2a6b00204f74db3e1e08a789a995c674bea5b8
2 files changed