* PLDA XpressRICH3-AXI host controller

The PLDA XpressRICH3-AXI host controller can be configured in a manner that
makes it compliant with the SBSA[1] standard published by ARM Ltd. For those
scenarios, the host-generic-pci.txt bindings apply with the following additions
to the compatible property:

Required properties:
 - compatible: should contain "plda,xpressrich3-axi" to identify the IP used.


[1] http://infocenter.arm.com/help/topic/com.arm.doc.den0029a/