bf3a385217
Rather than extending syr827 for syr828 (as initially done in D31103) switch to the Fairchild Semiconductor Corporation fan53555 implementation which is in-tree but was not attached to the build. The fan53555 implementation also supports syr827/syr8278 already. [1] Update NOTES and the arm64 GENERIC configuration for the switch. syr827 for now stays in the tree but is not used by any kernel configuration. Suggested by: mmel [1] Reviewed by: mmel, manu Differential Revision: https://reviews.freebsd.org/D31112