Migrate mpq demux driver from kernel 3.18 to 4.4

This change migrates all the relevant files consisting of the mpq
demux driver and its plugins, including the addition of TSPPv1 HW
driver.

The snapshot is taken as of msm-3.18,
'commit e12c33f73fb0 ("Merge defconfig: Enabling confg INET_DIAG_DESTROY")'

In addition, introduce a few code changes to reduce checkpatch
warnings, typos and other style issues.

CRs-Fixed: 1057562
Change-Id: I76c9a9e44755a4a77e6cffb1dc07f5b28c8b34b8
Signed-off-by: Udaya Mallavarapu <udaym@codeaurora.org>