Add VNDK APEX for product partition as bootstrap

With product partition enforcement, ro.product.vndk.version may be
different from ro.vndk.version. This should be activated in case
processes from product partition need to be run at early stage.

Bug: 146752896
Test: boot GSI R-on-Q
Change-Id: I9929256b4ee49d0b4f908faa1845201159feb00b
1 file changed