media: imx: imx7-media-csi: Don't double-enable the RxFIFO

The RxFIFO is enabled by imx7_csi_dmareq_rff_enable() in both
imx7_csi_init() and imx7_csi_enable(). Enabling it once is enough,
remove the former.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/imx/imx7-media-csi.c

@@ -544,7 +544,6 @@ static int imx7_csi_init(struct imx7_csi *csi)
 		return ret;
 
 	imx7_csi_configure(csi);
-	imx7_csi_dmareq_rff_enable(csi);
 
 	ret = imx7_csi_dma_setup(csi);
 	if (ret < 0)