Generate source files into arch-neutral dir.

This fixed the multibuild warnings like:
build/core/binary.mk:534: target
`out/target/product/generic_arm64/obj/SHARED_LIBRARIES/libRSSupport_intermediates/rsgApi.o'
doesn't match the target pattern
build/core/binary.mk:539: warning: overriding commands for target
`out/target/product/generic_arm64/obj/SHARED_LIBRARIES/libRSSupport_intermediates/rsgApi.o'

Change-Id: Ifc5a0a4b6c7d219536963c3e06080b830a309b39
2 files changed