mailbox: Add snapshot of MSM QMP driver

This snapshot is taken as of msm-4.19 'commit <dac6e981b55e>
("Merge "icnss: Skip removing WLAN host driver during recovery"")'.

In addition, update header copyright and remove unnecessary module
owner assignment.

Change-Id: Ic1e6ff34ca90a52d6b879ef0b12f5b60e9aec058
Signed-off-by: Chris Lew <clew@codeaurora.org>