media: rkisp1: Configure quantization using ISP source pad

The rkisp1_config_isp() function uses the format on the sink pad of the
ISP to configure quantization at the output of the ISP. This is
incorrect, as hinted by the src_frm variable name that stores the
format. Fix it by using the source pad.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c

@@ -231,7 +231,7 @@ static int rkisp1_config_isp(struct rkisp1_isp *isp,
 		struct v4l2_mbus_framefmt *src_frm;
 
 		src_frm = rkisp1_isp_get_pad_fmt(isp, NULL,
-						 RKISP1_ISP_PAD_SINK_VIDEO,
+						 RKISP1_ISP_PAD_SOURCE_VIDEO,
 						 V4L2_SUBDEV_FORMAT_ACTIVE);
 		rkisp1_params_configure(&rkisp1->params, sink_fmt->bayer_pat,
 					src_frm->quantization);