platform/mowgli: modify VPD to export correct data to system VPD EEPROM
platform/mowgli: modify VPD to export correct data to system VPD EEPROM

Hostboot doesn't export the correct data for the system VPD EEPROM for this system.
So add vpd_dt_fixup().

Cc: 74fabe089ecbd0f3f71683991d9e2780a4de1f4a@lists.ozlabs.org
Signed-off-by: LuluTHSu <f06e6626f60f3e1223e2771aa6b88d7b1b1acf49@wistron.com>
Signed-off-by: Oliver O'Halloran <3dfaff8fa6ae977f042064a112a6aac576279b9b@gmail.com>

open-power/skiboot,legoater/skiboot,shenki/skiboot,legoater/skiboot,legoater/skiboot,shenki/skiboot,shenki/skiboot,open-power/skiboot,legoater/skiboot,qemu/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,open-power/skiboot