drivers: video: Kconfig: Add config remove video

This is required since user may want to either call the remove method
of video driver and reset the display or not call the remove method
to continue displaying until next stage.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>