soc: qcom: Add snapshot of GLINK_PKT Driver

This snapshot is taken as of msm-4.14 'commit <67942dbf2187>
("Merge "net: netfilter: IRC DCC for private clients"")'.

In addition change copyrights to SPDX format.

Change-Id: Ide4f9047314016f2fe14c78af0515ad33d25c338
Signed-off-by: Chris Lew <clew@codeaurora.org>