media: staging/imx: Implement init_cfg subdev pad op
Implement the init_cfg pad op in all imx-media subdevices. The try formats are initialized to the current active formats on all pads. Signed-off-by: NSteve Longerbeam <steve_longerbeam@mentor.com> Reviewed-by: NPhilipp Zabel <p.zabel@pengutronix.de> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
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