openbmc oem code: add blobTranserCmd
openbmc oem code: add blobTranserCmd

BlobTransferCmd is used by phosphor-ipmi-blobs

Change-Id: I48b0e7a764d7fb5fb834320fbe415e4849f06cd8
Signed-off-by: Patrick Venture <36c53fa43f47f3fd67cb2fc38031827244d18a1f@google.com>

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