CONFIG_CRYPTO_MD5_SPARC64 is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

MD5 digest algorithm (SPARC64)

modulename: md5-sparc64.ko

configname: CONFIG_CRYPTO_MD5_SPARC64

Linux Kernel Configuration
└─>Cryptographic API
└─>MD5 digest algorithm (SPARC64)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
MD5 message digest algorithm (RFC1321) implemented
using sparc64 crypto instructions, when available.

source code:
arch/sparc/crypto/