[media] staging: media: davinci_vpfe: Fix indentation issue in vpfe_video.c

This is a patch to the vpfe_video.c file that fixes an indentation
warning reported by checkpatch.pl

Signed-off-by: Leo Sperling <leosperling97@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>