Enhance remap capabilities for Armada38x

Add conditions corresponding to Armada38x-based SoCs,
enhancing their remap capabilities.
This is required for PCIe to work properly.

Reviewed by: andrew
Obtained from: Semihalf
Sponsored by: Stormshield
Submitted by: Bartosz Szczepanek <bsz@semihalf.com>
Differential revision: https://reviews.freebsd.org/D4376