x/build: misc-compile coverage for GOOS=android ports in LUCI

[dmitshur]

This is like #25963, but for LUCI.

The current failure mode (for android/arm specifically):

# compress/bzip2.test
loadinternal: cannot find runtime/cgo
/.../goroot/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
gcc: error: unrecognized command-line option ‘-marm’; did you mean ‘-mabm’?

See https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8773728632941952977/+/u/step/10/log/2.

misc-compile coverage for android/386, android/amd64, and android/arm64 needs similar attention.

CC @golang/android.

[ianlancetaylor]

In case it's not clear, this is trying to pass an ARM option to an x86 C compiler. Somehow the tool is using the wrong C compiler.

[dmitshur]

Thanks. I’ll move this to NeedsDecision, since the current problem is understood, and next up we need to decide what we’d like the LUCI misc-compiler trybot to test for these ports.