arm64: zynqmp: add support for zcu106 rev1.0

This patch adds psu_init for Xilinx ZCU106 rev1.0. Xilinx ZCU106 rev1.0 has
newer x16 DDR4 memories and it is SW compatible with revA.

Signed-off-by: Neal Frager <neal.frager@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/997b3e23457e4d24ce0e197d742382aaec36c2b2.1646230318.git.michal.simek@xilinx.com