Add a common implementation of SMBus functionality for early chipsets. Note
however, that existing via chipsets are not ported to this code. Porting
will require hardware testing to make sure everything is fine.
This code is used in the VIA VX900 branch.
Change-Id: If5ad8cd0942ac02d358a0139967e7d85d395660f
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/144
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>