Add Zaius board configuration

Zaius is a POWER9 machine announced at the 2016 OpenPOWER summit.

Notable differences from Witherspoon in this initial board configuration
include Zaius's lack of I2C connections to OCC, lack of external memory
buffers, and lack of power capping support.

Change-Id: Iadf582b185d3128022659b33b9b0cecc8492f82c
Signed-off-by: Xo Wang <xow@google.com>
1 file changed