Move gptutils/json libs to vendor for build split

libgptutils and libjson are only used by vendor. Move them
to vendor partition so they can work with generic AOSP
system image.

Bug: 37927875
Test: These libs are under /vendor/lib(64) instead of
/system/lib(64) and the resulted image works on the device.
Change-Id: Id04f7a09fdc8e60de79f83b8fd0c2504fd2e2ebe
3 files changed