Add product and mode vars to mixed_droid
This will allow us to easily leverage mixed_droid to test `m droid` with
alternative target products, or in prod mode. This is especially useful
as we add additional CI for products other than aosp_arm64.
Bug: 231322898
Test: MIXED_DROID_MODE=prod build/bazel/ci/mixed_droid.sh
Test: mixed_droid.sh (no vars)
Test: MIXED_DROID_MODE=badflag build/bazel/ci/mixed_droid.sh
Test: mixed_libc.sh with and without lunch
Change-Id: I22d16567e0fbf6f04ba9dd85c59a58d48079419a
2 files changed