msm: camera: isp: Add file for vfe 4.8

Add code to support new vfe hardware. Add the new files
for the hardware and use common functions from other
hardware files when possible. Also, for existing hardware
functions if a common function can be used then use the
common function.

CRs-Fixed: 987962
Change-Id: I600f06478d4ee0d082642014484c6e730702de68
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>