replaces ehrenberg with new implementations

include/minres/devices/dma.h

@@ -0,0 +1,11 @@
+#ifndef _DEVICES_DMA_H
+#define _DEVICES_DMA_H
+
+#include "gen/dma.h"
+
+#define EVENT_UART 1
+#define I2S_LEFT_SAMPLE_AVAIL 2
+#define I2S_RIGHT_SAMPLE_AVAIL 4
+#define CAMERA_PIXEL_AVAIL 8
+
+#endif /* _BSP_DMA_H */