lib/crypto: arm64/sha3: Migrate optimized code into library

Instead of exposing the arm64-optimized SHA-3 code via arm64-specific
crypto_shash algorithms, instead just implement the sha3_absorb_blocks()
and sha3_keccakf() library functions.  This is much simpler, it makes
the SHA-3 library functions be arm64-optimized, and it fixes the
longstanding issue where the arm64-optimized SHA-3 code was disabled by
default.  SHA-3 still remains available through crypto_shash, but
individual architectures no longer need to handle it.

Note: to see the diff from arch/arm64/crypto/sha3-ce-glue.c to
lib/crypto/arm64/sha3.h, view this commit with 'git show -M10'.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251026055032.1413733-10-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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