This patch adds an L2-Cache error handler.  In addition, it reenables setup
of the L2 cache based on erratum L2C0_1 now that we have been reassured
that there are no more faulty parts being shipped.  If there is a problem,
the error handler will report it.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>