Correct spelling of timestamp variable
Correct spelling of timestamp variable

The timestamp variable in the ipmi_add_sel_request_t struct
was misspelled.

Change-Id: I465432d021882f3966c44aec8cbdd779122521f6
Signed-off-by: Jason M. Bills <f7b5ff81b72baf588c50973df07ebfa9bd6f0bee@linux.intel.com>

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