staging: mt7621-dma: Fix open brace position

Fixes checkpatch error: OPEN_BRACE

Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-dma/ralink-gdma.c

@@ -134,8 +134,7 @@ struct gdma_dma_dev {
 	struct gdma_dmaengine_chan chan[];
 };
 
-struct gdma_data
+struct gdma_data {
-{
 	int chancnt;
 	u32 done_int_reg;
 	void (*init)(struct gdma_dma_dev *dma_dev);