media: imx: imx7_mipi_csis: Print the RESOL_CH0 register

Add the RESOL_CH0 register to the list of registers printed through the
debugfs debug infrastructure for the driver, as it can be useful to
verify proper configuration of the CSI-2 receiver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>