Add support for the secondary SMBus controller on the AMD SB800 and AMD FCH
chipsets.
Signed-off-by: NRudolf Marek <r.marek@assembler.cz>
Tested-by: NPaul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>