msm: camera: isp: Add VFE Bus 2.0 support

This change adds support for VFE Bus version 2.0 to the IFE
driver. This change includes new enum to support new output
port, new header to update hardware registers and info and
finally new source code to support the Bus 2.0 architecture.
Apart from register programming changes, source code changes
include not subscribing to individual WM done IRQs and always
acquiring composite groups as they are fixed in the hardware.

Change-Id: I3e29705a07aa5f1c861e26fb5a45597d0359742d
Signed-off-by: Venkat Chinta <vchinta@codeaurora.org>
Signed-off-by: Jigarkumar Zala <jzala@codeaurora.org>