dmaengine: sdxi: completion: Include hw.h

This code uses structures and constants from hw.h; include it.

Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>

Author: nathanlynch

drivers/dma/sdxi/completion.c

@@ -11,6 +11,7 @@
 
 #include "completion.h"
 #include "descriptor.h"
+#include "hw.h"
 
 struct sdxi_completion {
 	struct sdxi_dev *sdxi;