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arm, acpi: increase size of memory region arrays

Authored by jchandra on Feb 4 2019, 4:14 AM.



Bump up MAX_HWCNT and MAX_EXCNT to 32 when ACPI is enabled. These are
the sizes of the hwregions and exregions arrays respectively. ACPI
firmware typically has more memory regions and the current value of
16 is not sufficient for some platforms.

This commit fixes a failure seen with AMI firmware on Cavium's Sabre
ThunderX2 reference platforms. The platform needs 21 physical memory
regions and 18 excluded regions to boot correctly with the current
firmware release.

Test Plan

Boot on Cavium ThunderX2 with AMI firmware (latest label 25)

Diff Detail

rS FreeBSD src repository - subversion
Automatic diff as part of commit; lint not applicable.
Automatic diff as part of commit; unit tests not applicable.