update readme files and makefile.libs to use audio-preprocessing-fw

Signed-off-by: Ming Wei <mwei@ti.com>

update global environment variable settings

Signed-off-by: Ming Wei <mwei@ti.com>

update the demo directory path
add the makefile for K2G and AM572x

Signed-off-by: Ming Wei <mwei@ti.com>

Add port the BIOS version of noise-reduction demo to K2G
Add custom platforms for AM572x GP EVM, DA830 DSK and K2G EVM
Update readme files
Delete unused files

Signed-off-by: Ming Wei <mwei@ti.com>

Update readme.txt files. Add doc for file based room simulation demo

Signed-off-by: Ming Wei <mwei@ti.com>

Made the file_demo independent from the VOLIB install location
Renamed file_demo
Changed the readme.txt files accordingly

Signed-off-by: Ming Wei <mwei@ti.com>

Update the GEL file, readme.txt files and directory name change

Signed-off-by: Ming Wei <mwei@ti.com>

Update readme.txt files and the CCXML file

Signed-off-by: Ming Wei <mwei@ti.com>

file_demo: removed un-used file

Signed-off-by: Ming Wei <mwei@ti.com>

Resturcture the GIT repository for noise reduction demo:
1. renamed the bf-asnr-mss-vau to noise-reduction
2. add two top level directories: file_demo and file_demo_bios
3. add two sub-directories for each top level directories: am752x and da830

Signed-off-by: Ming Wei <mwei@ti.com>

Initial version

Signed-off-by: Ming Wei <mwei@ti.com>