Revert "dynamic_debug: remove unneeded includes"

This reverts commit 04db6e5fddca55186b6a74339a62c800150648bc.

Odds are, we really don't want to revert all of these, and need to be
more careful in the future to make sure we don't break the build of
other arches.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>