force dex2oat target executables to be compiled for 32-bit

64-bit dex2oat doesn't support 32-bit targets yet, force dex2oat
target executables to compile 32-bit for now by passing in a
value for LOCAL_MULTILIB to build-art-executable.

Bug: 13764385
Change-Id: I41adba1e64f373e4b61a3c13af2592ed4f7d0b57
2 files changed