amlv4l2: CF1 support stream mode [1/1]

PD#SWPL-118049

Problem:
amlv4l2dec element support v4l2 stream mode

Solution:
amlv4l2dec element support v4l2 stream mode

Verify:
(detail info)

Change-Id: I8b77343e02904eda5d22d52367150f760059a788
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
diff --git a/src/gstamlv4l2bufferpool.c b/src/gstamlv4l2bufferpool.c
index 838f3fc..4fd0eaf 100644
--- a/src/gstamlv4l2bufferpool.c
+++ b/src/gstamlv4l2bufferpool.c
@@ -1655,6 +1655,7 @@
             GST_DEBUG_OBJECT(pool, "amlmodbuf return free buf before acquire buf");
             gst_aml_v4l2_buffer_pool_release_buffer_aml_patch(bpool);
             ret = gst_aml_v4l2_buffer_pool_dequeue(pool, buffer, FALSE);
+            GST_DEBUG_OBJECT(pool, "amlmodbuf dequeue return ret:%d", ret);
 #else
             /* just dequeue a buffer, we basically use the queue of v4l2 as the
              * storage for our buffers. This function does poll first so we can