Fix host gtests for HOST_PREFER_32_BIT

The 32-bit and 64-bit ARCH variables are switched.
HOST_ARCH=x86_64 HOST_2ND_ARCH=x86
ART_HOST_ARCH=x86 ART_HOST_2ND_ARCH=x86_64

Make sure the gtests (ART_HOST_ARCH=x86) depend on
the right boot image (HOST_2ND_ARCH=x86).

Test: m test-art-host-gtest
Bug: 147817558
Bug: 147819342
Change-Id: Idd546228326a3a116edcda9b98ed05f0cd87f68b
1 file changed