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If the attached video sensor cannot provide the
requested image size, try to use resizing engine
included in the eMMa-PrP IP.

This patch supports both averaging and bilinear
algorithms.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>