Forward imx_3.14.y mxc video output drivers to 4.1 kernel.
The priv field of v4l2_pix_format is used to expand colorspace,
and can not use to pass IPU input crop size.
Add private IOCTL VIDIOC_S_INPUT_CROP and VIDIOC_G_INPUT_CROP
to pass input crop size.
Signed-off-by: Sandor Yu <R01008@freescale.com>
Sandor Yu