crypto: skcipher - blkcipher and ablkcipher should it be static

Fixes the following sparse warnings:

 crypto/skcipher.c:94:5:
 warning: symbol 'crypto_init_skcipher_ops_blkcipher'
 was not declared. Should it be static?

 crypto/skcipher.c:185:5:
 warning: symbol 'crypto_init_skcipher_ops_ablkcipher'
 was not declared. Should it be static?

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/skcipher.c

@@ -91,7 +91,7 @@ static void crypto_exit_skcipher_ops_blkcipher(struct crypto_tfm *tfm)
 	crypto_free_blkcipher(*ctx);
 }
 
-int crypto_init_skcipher_ops_blkcipher(struct crypto_tfm *tfm)
+static int crypto_init_skcipher_ops_blkcipher(struct crypto_tfm *tfm)
 {
 	struct crypto_alg *calg = tfm->__crt_alg;
 	struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
@@ -182,7 +182,7 @@ static void crypto_exit_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
 	crypto_free_ablkcipher(*ctx);
 }
 
-int crypto_init_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
+static int crypto_init_skcipher_ops_ablkcipher(struct crypto_tfm *tfm)
 {
 	struct crypto_alg *calg = tfm->__crt_alg;
 	struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);