mISDN: Echo canceler now gets delay information from hardware

Added tx-fifo information for calculation of current delay to sync tx and rx
streams for echo canceler.

Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/mISDN/dsp.h b/drivers/isdn/mISDN/dsp.h
index 0a4a362..4a1c444d 100644
--- a/drivers/isdn/mISDN/dsp.h
+++ b/drivers/isdn/mISDN/dsp.h
@@ -262,5 +262,5 @@
 extern void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data,
 		int len);
 extern void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data,
-		int len);
+		int len, unsigned int txlen);