This patch depends on https://review.source.android.com/24052
It is used to ensure that the proper kernel image is copied to the
platform image's kernel-qemu.
This is needed because for ARMv7 platform builds, the image is
in prebuilt/android-arm/kernel/kernel-qemu-armv7, instead of
prebuilt/android-arm/kernel/kernel-qemu
Change-Id: I0f175a1ba3d97f5c7420597bdeebc7a353551194
