Use build fingerprint check for Mi 8

Old way doesnt work with Pie vendors.
Move to universal way of determining Mi 8
See this: https://github.com/phhusson/vendor_hardware_overlay/issues/25

Test: make -j64 treble-overlay-xiaomi-mi8; copy to /system/overlay/; ensure overlay works

Signed-off-by: argraur <argraur@gmail.com>
1 file changed