Add get channel payload version command

Implement get channel payload version command (IPMI specification
section 24.9). As per the specification, this command is basically a
hard-coded value that says we are using IPMI 2.0.

Tested:
    ipmitool raw 6 0x4F 3 1 // Command
     10                     // Response

Change-Id: Id16723e7257361814b98f3c14d759f2919ad4c03
Signed-off-by: Ayushi Smriti <smriti.ayushi@intel.com>
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
4 files changed