drivers: video: video_mcux_smartdma: add SMARTDMA video driver

Add SMARTDMA video driver. This driver uses the SMARTDMA engine as a
parallel camera interface, which can read QVGA frames from a camera
device. Due to SRAM constraints, the video driver divides the camera
stream into multiple horizontal video buffers as it streams them back to
an application.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>