media: am437x-vpfe: Requested frame size and fmt overwritten by current sensor setting

media: am437x-vpfe: Requested frame size and fmt overwritten by current sensor setting

commit f47c9045643f91e76d8a9030828b9fe1cf4a6bcf upstream.

Upon a S_FMT the input/requested frame size and pixel format is
overwritten by the current sub-device settings.
Fix this so application can actually set the frame size and format.

Fixes: 417d2e507edc ("[media] media: platform: add VPFE capture driver support for AM437X")
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>