Merge "Use a better arbitrary target arch for this host-only "device"."

# (device) target architectures are irrelevant. However, the build system isn't

# prepared to handle no target architectures at all, so pick something

# arbitrarily.

TARGET_ARCH_SUITE := ndk

TARGET_ARCH := arm

TARGET_ARCH_VARIANT := armv7-a-neon

TARGET_CPU_VARIANT := generic

TARGET_CPU_ABI := armeabi-v7a

TARGET_CPU_ABI2 := armeabi

HOST_CROSS_OS := linux_bionic

HOST_CROSS_ARCH := x86_64