Better configure sinks

hw/device.c

@@ -62,7 +62,12 @@ int device_open_buffer_list(device_t *dev, bool do_capture, unsigned width, unsi
 
   if (do_capture) {
     buf_list = &dev->capture_list;
-    do_mmap = true;
+
+    if (dev->buf_sink) {
+      do_mmap = true;
+    } else {
+      do_mmap = dev->allow_dma;
+    }
 
     if (dev->capture_list) {
       E_LOG_ERROR(dev, "The capture_list is already created.");

hw/device.h

@@ -8,6 +8,7 @@ typedef struct device_s {
   int fd;
   struct v4l2_capability v4l2_cap;
   bool allow_dma;
+  bool buf_sink;
 
   struct buffer_list_s *capture_list;
   struct buffer_list_s *output_list;