crypto: af_alg - Add dependency on NET

Add missing dependency on NET since we require sockets for our
interface.

Should really be a select but kconfig doesn't like that:

net/Kconfig:6:error: found recursive dependency: NET -> NETWORK_FILESYSTEMS -> AFS_FS -> AF_RXRPC -> CRYPTO -> CRYPTO_USER_API_HASH -> CRYPTO_USER_API -> NET
Reported-by: Zimny Lech <napohybelskurwysynom2010@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -848,6 +848,7 @@ config CRYPTO_USER_API
 
 config CRYPTO_USER_API_HASH
 	tristate "User-space interface for hash algorithms"
+	depends on NET
 	select CRYPTO_HASH
 	select CRYPTO_USER_API
 	help
@@ -856,6 +857,7 @@ config CRYPTO_USER_API_HASH
 
 config CRYPTO_USER_API_SKCIPHER
 	tristate "User-space interface for symmetric key cipher algorithms"
+	depends on NET
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_USER_API
 	help