FreeBSD_HEAD_arm64 - Build #1502 - Fixed

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FreeBSD_HEAD_arm64 - Build #1502 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_arm64/1502/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_arm64/1502/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_arm64/1502/console

Change summaries:

289824 by kib:
Add CLFLUSHOPT instruction wrappers.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

289823 by kib:
Decode new values for CPUID leaf 2 cache and TLB descriptors, from the
Intel SDM revision 56.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

289822 by kib:
Fix build for the KTR-enabled kernels.

Sponsored by:	The FreeBSD Foundation

289821 by hselasky:
Fix kernel build by restoring a temporary variable which was not yet
ripe for removal.

289819 by mav:
Fix LUN disable in CAM broken at r285155.

MFC after:	1 week