MFC r347440, r347929-r347930, r349588

r347440:
ahci: Check if bus is cache-coherent

We do this for FDT systems but not for ACPI ones.
Check the presence of the _CCA attribute.

Sponsored by: Ampere Computing, LLC
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D20144

r347929:
pci: ecam: Do not warn on mismatch of bus_end

We cannot know the bus end number before parsing the MCFG table
so don't set the bus_end before that. If the MCFG table doesn't
exist we will set the configuration base address based on the _CBA
value and set the bus_end to the maximal number allowed by PCI.

Sponsored by: Ampere Computing, LLC

Differential Revision: https://reviews.freebsd.org/D20213

r347930:
pci: ecam: Correctly parse memory and IO region

When activating a resource do not compare the resource id to the adress.
Treat IO region as MEMORY region too.

Submitted by: Tuan Phan <tphan@amperecomputing.com> (Original Version)
Sponsored by: Ampere Computing, LLC
Differential Revision: https://reviews.freebsd.org/D20214

r349588:
arm64: efi: Map memory IO region as device

Reviewed by: andrew
Sponsored by: Ampere Computing, LLC