[ALPS03932298] Factory Mode: move to vendor partition

[Solution]
Factory mode should build in vendor partiton, so move
factory from system partition to vendor partition

MTK-Commit-Id: c55354593a97aed3af9d0b2584037d03d3d2669c

Change-Id: I5a607b60f9ac974380c5e440a6fa0c51797d6b1b
CR-Id: ALPS03932298
Feature: Factory Mode