trace: Add snapshot of ipc_logging 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: I6930203ab052a522d998bc4e368eb12deabeef91
Signed-off-by: Chris Lew <clew@codeaurora.org>