drivers: rmnet: shs: Snapshot of data.lnx.5.1

Snapshot of shs driver on data.lnx.5.1 up to the following
change id.

drivers: rmnet: shs: Unrevert Deadlock fix
I1307d82ffa12d0cc1115baa25a19df8ada924e89

Change-Id: I868f2fff8a90d1e99860803c994cee0f69af60b2
Acked-by: Raul Martinez <mraul@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>