SDR: Adding fru records as part of Get SDR command

Currently Get SDR only responds with physical/virtual sensor
records,it doesn't support for FRU records,This commit adds
the support for FRU records.

Resolves openbmc/openbmc#2776

Change-Id: I34edfa892b32f4e866cf0c084d97c2f3482d40f4
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
3 files changed