wcnss: Add wcnss snapshot to msm-4.9

Add pronto platform driver support in kernel msm-4.9.
This is a snapshot of the wcnss driver and associated files
as of msm-4.4.
'commit ffe5134f23b5 ("net: wcnss: Add snapshot of wcnss driver")'

Change-Id: I1e19abbd3f7903e74df4c17226a75961267ab98a
Signed-off-by: Anurag Chouhan <achouhan@codeaurora.org>