crypto: chelsio - Make function aead_ccm_validate_input static

Function aead_ccm_validate_input is local to the source and does not
need to be in global scope, so make it static.

Cleans up sparse warning:
drivers/crypto/chelsio/chcr_algo.c:2627:5: warning: symbol
'aead_ccm_validate_input' was not declared. Should it be static?
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/chelsio/chcr_algo.c

@@ -2636,10 +2636,10 @@ static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
 					0, dst_size);
 }
 
-int aead_ccm_validate_input(unsigned short op_type,
-			    struct aead_request *req,
-			    struct chcr_aead_ctx *aeadctx,
-			    unsigned int sub_type)
+static int aead_ccm_validate_input(unsigned short op_type,
+				   struct aead_request *req,
+				   struct chcr_aead_ctx *aeadctx,
+				   unsigned int sub_type)
 {
 	if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
 		if (crypto_ccm_check_iv(req->iv)) {