media: atomisp: replace VFL_TYPE_GRABBER by VFL_TYPE_VIDEO

This type was renamed in the past by a more meaningul
name. Change it on atomisp too.

Fixes: 238e4a5b ("media: rename VFL_TYPE_GRABBER to _VIDEO")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>