media: imx: imx7-media-csi: Remove incorrect interlacing support

The driver doesn't currently support interlacing, but due to legacy
leftovers, it accepts values for the pixel format "field" field other
than V4L2_FIELD_NONE. Fix it by hardcoding V4L2_FIELD_NONE. Proper
interlacing support can be implemented later if desired.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/nxp/imx7-media-csi.c

@@ -1162,20 +1162,6 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
 		cc = imx7_csi_find_pixel_format(pixfmt->pixelformat);
 	}
 
-	/* Allow IDMAC interweave but enforce field order from source. */
-	if (V4L2_FIELD_IS_INTERLACED(pixfmt->field)) {
-		switch (pixfmt->field) {
-		case V4L2_FIELD_SEQ_TB:
-			pixfmt->field = V4L2_FIELD_INTERLACED_TB;
-			break;
-		case V4L2_FIELD_SEQ_BT:
-			pixfmt->field = V4L2_FIELD_INTERLACED_BT;
-			break;
-		default:
-			break;
-		}
-	}
-
 	/*
 	 * Round up width for minimum burst size.
 	 *
@@ -1187,6 +1173,7 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
 
 	pixfmt->bytesperline = pixfmt->width * cc->bpp / 8;
 	pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
+	pixfmt->field = V4L2_FIELD_NONE;
 
 	return cc;
 }