audio: audio encoder/decoder enhancement

- Enable decoder test app for AAC, AMR,
  AMRWB, and MP3 formats.
- Enable encoder for AMRWB, AAC, EVRC,
  and QCELP formats.

Change-Id: I0c75dcc4fb02044f127270a64d3578d62bf6eeda
diff --git a/mm-audio/adec-aac/Makefile b/mm-audio/adec-aac/Makefile
new file mode 100644
index 0000000..169fdc6
--- /dev/null
+++ b/mm-audio/adec-aac/Makefile
@@ -0,0 +1,6 @@
+all:
+	@echo "invoking adec-aac make"
+	$(MAKE) -C qdsp6
+
+install:
+	$(MAKE) -C qdsp6 install