Message parser changes to support Integrity Algo

The unflatten logic of IPMI 2.0 parser is modified to support
verification of integrity data and flatten logic is modified
to support adding integrity data.

Resolves openbmc/openbmc#869

Change-Id: I0553b12bcd17075d72e46120eeec5e524a5be420
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
2 files changed