crypto: arm64/sha3 - Rename conflicting function

crypto: arm64/sha3 - Rename conflicting function

Rename the arm64 sha3_update() function to have an "arm64_" prefix to
avoid a name conflict with the upcoming SHA-3 library.

Note: this code will be superseded later.  This commit simply keeps the
kernel building for the initial introduction of the library.

[EB: dropped unnecessary rename of sha3_finup(), and improved commit
     message]

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251026055032.1413733-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>