crypto: ccree - fix missing break in switch statement

Add missing break statement in order to prevent the code from falling
through to case S_DIN_to_DES.

This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.

Fixes: 63ee04c8b4 ("crypto: ccree - add skcipher support")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccree/cc_cipher.c

@@ -80,6 +80,7 @@ static int validate_keys_sizes(struct cc_cipher_ctx *ctx_p, u32 size)
 		default:
 			break;
 		}
+		break;
 	case S_DIN_to_DES:
 		if (size == DES3_EDE_KEY_SIZE || size == DES_KEY_SIZE)
 			return 0;