Experimental kernel is much newer, and many configuration options have
dropped since 4.19. Let's use a whitelist to itemize what we expect to
be dropped in the final config if experimental kernel us utilized.
Signed-off-by: Eric Ernst <eric.ernst@intel.com>
This isn't available in the baseline kernel, necessarily. Only
add these config options if an experimental kernel is being used.
Signed-off-by: Eric Ernst <eric.ernst@intel.com>