crypto: chacha20poly1305 - export CHACHAPOLY_IV_SIZE

Move CHACHAPOLY_IV_SIZE to header file, so it can be reused.
Signed-off-by: Cristian Stoica <cristian.stoica@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/chacha20poly1305.c

@@ -22,8 +22,6 @@
 
 #include "internal.h"
 
-#define CHACHAPOLY_IV_SIZE	12
-
 struct chachapoly_instance_ctx {
 	struct crypto_skcipher_spawn chacha;
 	struct crypto_ahash_spawn poly;

include/crypto/chacha20.h

@@ -13,6 +13,7 @@
 #define CHACHA20_IV_SIZE	16
 #define CHACHA20_KEY_SIZE	32
 #define CHACHA20_BLOCK_SIZE	64
+#define CHACHAPOLY_IV_SIZE	12
 
 struct chacha20_ctx {
 	u32 key[8];