staging: bcm2835-camera: Move video component setup in its own function

The function mmal_setup_components has to many indention levels. So move
the setup code for video component in its own function.

Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1585485901-10172-7-git-send-email-stefan.wahren@i2se.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>