sel: Support OEM record 0xE0~0xFF
sel: Support OEM record 0xE0~0xFF

The OEM record 0xE0~0xFF only includes record type and 13 bytes OEM
data.

Tested: Add 0xFF OEM SEL and verify the sel list shows the expected
        record.

Signed-off-by: Lei YU <fc52a17c06c071ee7cd115c972235443e2107013@bytedance.com>
Change-Id: Ied3d68cf4393d37f8841ac66c6ca10c66393b7da

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