arm64: Replace cpu_tlb_flushID in initarm
Replace cpu_tlb_flushID with pmap_s1_invalidate_all_kernel in initarm.
They are identical in the SMP case.
Reviewed by: alc
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D52184
(cherry picked from commit fa23bfb425d53a87064d86ec9ae0ae5e31aa5d5b)