Use MMC multislot structures for Siemens SX1 board
Signed-off-by: NCarlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This adds basic support for Siemens SX1. More patches are available,
with video driver, mixer, and serial ports working. That is enough to
do gsm calls with right userland.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NTony Lindgren <tony@atomide.com>