crypto: sm3 - Rename CRYPTO_SM3_GENERIC to CRYPTO_SM3

crypto: sm3 - Rename CRYPTO_SM3_GENERIC to CRYPTO_SM3

The kconfig options for generic crypto API modules have traditionally
*not* had a "_GENERIC" suffix.  Also, the "_GENERIC" suffix will make
even less sense once the architecture-optimized SM3 code is moved into
lib/crypto/ and the "sm3" crypto_shash is reimplemented on top of that.

Thus, rename CRYPTO_SM3_GENERIC to CRYPTO_SM3.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260321040935.410034-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>