Add four more defconfigs which we maintained outside of
the kernel tree for no good reason.
Inside of the kernel tree they can be easily used:

make whatever_defconfig

"make help" shows the available defconfigs.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>