media: nxp: imx8-isi: Add suspend/resume support for ISI mem2mem

Add suspend/resume support for ISI when work at memory to memory mode.

Link: https://lore.kernel.org/r/20250815-isi_m2m-v2-1-32e3720880cc@nxp.com


Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>