crypto: Build SPARC DES algorithms on SPARC only.

Asking for this option on x86 seems a bit pointless.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

crypto/Kconfig

@@ -796,6 +796,7 @@ config CRYPTO_DES
 
 config CRYPTO_DES_SPARC64
 	tristate "DES and Triple DES EDE cipher algorithms (SPARC64)"
+	depends on SPARC64
 	select CRYPTO_ALGAPI
 	select CRYPTO_DES
 	help