Provide project license information

[anatol]

I am going to create the project package for Linux Arch and I need an information about project source code licensing.

Could you please provide it in the documentation and add a license file to the project tree?

[TheGeorge]

The sources are extracted from the linux kernel sources and have the same licence. I will add the licence information.

[TheGeorge]

I added a licence file and a licence note in the readme.