staging: greybus: fix SPDX License Identifier

Replace the SPDX identifier with standard C comment.
Reported by checkpatch.

Signed-off-by: Ioannis Valasakis <code@wizofe.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioannis Valasakis 2018-11-09 13:53:46 +00:00 • committed by Greg Kroah-Hartman
commit ce8befe9ab