samsung_slsi-linaro-exynos: Guard with namespaces (2/6)

Added some namespace guarding. Guarded sub directories as
indicated by soong bp to makefile errors.
Made owner of aidl function "arm" because an aidl in a namespace
has to have an owner and that was the owner of another aidl.

Change-Id: I206eab7e463e9150e2d42651c4abc8006e2dedba
3 files changed