S7 Edge Exynos, S7 Exynos, S8 Exynos, S8+ Exynos, Note8 Exynos
This goes in /android/system/.repo/local_manifests/roomservice.xml
On s7 you will also need to apply
https://github.com/8890q/patches
8895 can use system_security patch to work around keysto re issues but doesnt need other patches