crypto: shash - Use crypto_alg_extsize helper
crypto: shash - Use crypto_alg_extsize helper

This patch replaces crypto_shash_extsize function with
crypto_alg_extsize.

Signed-off-by: Herbert Xu <ef65de1c7be0aa837fe7b25ba9a7739905af6a55@gondor.apana.org.au>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs