crypto: ecdh - make ecdh_shared_secret unique

There is another ecdh_shared_secret in net/bluetooth/ecc.c

Fixes: 3c4b23901a0c ("crypto: ecdh - Add ECDH software support")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/ecdh.c b/crypto/ecdh.c
index d3a9eec..3de2898 100644
--- a/crypto/ecdh.c
+++ b/crypto/ecdh.c
@@ -79,7 +79,7 @@
 		if (copied != 2 * nbytes)
 			return -EINVAL;
 
-		ret = ecdh_shared_secret(ctx->curve_id, ctx->ndigits,
+		ret = crypto_ecdh_shared_secret(ctx->curve_id, ctx->ndigits,
 					 (const u8 *)ctx->private_key, nbytes,
 					 (const u8 *)ctx->public_key, 2 * nbytes,
 					 (u8 *)ctx->shared_secret, nbytes);