Crypto: atmel-ecc: Make a couple of local functions static

Functions atmel_ecc_i2c_client_alloc and atmel_ecc_i2c_client_free are
local to the source and no not need to be in the global scope. Make
them static.

Cleans up sparse warnings:
symbol 'atmel_ecc_i2c_client_alloc' was not declared. Should it be static?
symbol 'atmel_ecc_i2c_client_free' was not declared. Should it be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/atmel-ecc.c

@@ -492,7 +492,7 @@ free_work_data:
 	return ret;
 }
 
-struct i2c_client *atmel_ecc_i2c_client_alloc(void)
+static struct i2c_client *atmel_ecc_i2c_client_alloc(void)
 {
 	struct atmel_ecc_i2c_client_priv *i2c_priv, *min_i2c_priv = NULL;
 	struct i2c_client *client = ERR_PTR(-ENODEV);
@@ -527,7 +527,7 @@ struct i2c_client *atmel_ecc_i2c_client_alloc(void)
 	return client;
 }
 
-void atmel_ecc_i2c_client_free(struct i2c_client *client)
+static void atmel_ecc_i2c_client_free(struct i2c_client *client)
 {
 	struct atmel_ecc_i2c_client_priv *i2c_priv = i2c_get_clientdata(client);