greybus: connection: make gb_connection_hd_find() private

Give gb_connection_hd_find() static scope; it's never used
outside "connection.c".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/connection.c

@@ -14,8 +14,8 @@
 
 static DEFINE_SPINLOCK(gb_connections_lock);
 
-struct gb_connection *gb_connection_hd_find(struct greybus_host_device *hd,
-						u16 cport_id)
+static struct gb_connection *
+gb_connection_hd_find(struct greybus_host_device *hd, u16 cport_id)
 {
 	struct gb_connection *connection = NULL;
 	unsigned long flags;

drivers/staging/greybus/connection.h

@@ -51,9 +51,6 @@ void gb_connection_destroy(struct gb_connection *connection);
 int gb_connection_init(struct gb_connection *connection);
 void gb_connection_exit(struct gb_connection *connection);
 
-struct gb_connection *gb_connection_hd_find(struct greybus_host_device *hd,
-				u16 cport_id);
-
 void greybus_data_rcvd(struct greybus_host_device *hd, u16 cport_id,
 			u8 *data, size_t length);