Check the offset length in the Read FRU command
Check the offset length in the Read FRU command

The offset length is validated against the size of the FRU area,
before proceeding with populating the response of the Read FRU command.

Resolves openbmc/openbmc#3132

Change-Id: I2bc660b7e389f5c85bac0acc8068dd53ab328a65
Signed-off-by: Tom Joseph <ccebe3ea0dc9f732d049c731e46285897e145ffb@in.ibm.com>

openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid