spi-topcliff-pch: Support new device LAPIS Semiconductor ML7831 IOH

commit 92b3a5c1bc3c7da1ae4675d014124f4a97ddb632 upstream.

ML7831 is companion chip for Intel Atom E6xx series.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/spi/Kconfig
Simple merge

diff --cc drivers/spi/spi-topcliff-pch.c
Simple merge