V4L/DVB (11369): v4l2-subdev: add load_fw and use that instead of abusing core->init.

The init callback was used in several places to load firmware. Make a separate
load_fw callback for that. This makes the code a lot more understandable.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index eca8bf9..07d5ffe 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -1234,7 +1234,7 @@
 	if (itv->card->hw_all & IVTV_HW_CX25840) {
 		struct v4l2_control ctrl;
 
-		v4l2_subdev_call(itv->sd_video, core, init, 0);
+		v4l2_subdev_call(itv->sd_video, core, load_fw);
 		/* CX25840_CID_ENABLE_PVR150_WORKAROUND */
 		ctrl.id = V4L2_CID_PRIVATE_BASE;
 		ctrl.value = itv->pvr150_workaround;