Why overwrite ipmiStorageSetSELTime to be not supported

[solonfan]

Currently intel oem ipmi overwrite set ipmiStorageSetSELTime to be not supported,
https://github.com/openbmc/intel-ipmi-oem/blob/master/src/storagecommands.cpp#L1161

But from latest phosphor-host-ipmi,the ipmiStorageSetSELTime is been implemented.
https://github.com/openbmc/phosphor-host-ipmid/blob/master/storagehandler.cpp#L592