[media] V4L2: soc-camera: move generic functions into a separate file
The sh_mobile_ceu_camera driver implements a generic algorithm for setting up an optimal client and host scaling and cropping configuration. This patch makes those functions available for all drivers. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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