This driver was only used by arch/ppc code and is obsolete
now with the move to common arch/powerpc code.

[bart: port it over IDE tree, remove leftover 'choice' from Kconfig]
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NKumar Gala <galak@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>