Skip GenericBootImageTest on 32-bit ARM devices. am: 18de343262

Original change: https://android-review.googlesource.com/c/platform/test/vts-testcase/kernel/+/2169922

Change-Id: I7ebba17132c9a4ba7cf0764375610d41372e3520
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>