media: ti-vpe: cal: Use 'unsigned int' type instead of 'unsigned'

Specifying 'int' explicitly is generally preferred in the kernel for
unsigned int types. Fix the only wrong occurrence.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>