Add a "consolidate" defconfig fragment to enable further debug options
of the GKI kernel. The "consolidate" name has a storied history, but
it's effectively a "debug" kernel.
The options enabled in the consolidate.fragment have been found to have
a good balance of additional debug features versus performance impact.
For instance, SLUB_DEBUG is not enabled due to large performance impact.
Bug: 186872007
Change-Id: I8fcbda0f9b47b3b33636a594797f97e86d2a6778
Signed-off-by: Elliot Berman <eberman@codeaurora.org>