arm64: Add more HWCAP2 values

Update the HWCAP2 values to align with Linux v6.6-rc7

Reviewed by: manu, imp, emaste
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D42379

(cherry picked from commit 2ee649c1dd5c41e93f02fdca8bba9279371e4efd)