Add changes to update camera drivers to:
1. Update necessary Kconfig files to support camera driver
compilation.
2. Support minor changes to V4L framework.
3. Export uapi headers to header_install export location.
Signed-off-by: Seemanta Dutta <seemanta@codeaurora.org>
Signed-off-by: Lakshmi Narayana Kalavala <lkalaval@codeaurora.org>