Merge "hikey960: Re-add prebuilt UEFI binaries (#108) to build" am: 5bab49828b am: 219057b5a0

Original change: https://android-review.googlesource.com/c/device/linaro/hikey/+/1461602

Change-Id: Ic4714303ceda65a742d3640c42e167dc5a7b5238