Revert "hal: audio-test: Move omx tests mm-audio-internal"

This reverts commit 2ce1027d13f23e34d6528968e94d6af876dc009c.

Also Fix NULL stream pointer LLVM issue by performing
NULL check before dereference the pointer

Change-Id: Ia2a8b3492b5424993e6c651555054d899f2ca3f2
18 files changed