AGESA: Remove duplicate OemCustomizeInitEarly declarations

Change-Id: I59b2c3f235a6b30e68e78c2fe4065fbc0488bc4c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7158
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
41 files changed