[media] media: rename the function that create pad links

With the new API, a link can be either between two PADs or between an interface
and an entity. So, we need to use a better name for the function that create
links between two pads.

So, rename the such function to media_create_pad_link().

No functional changes.

This patch was created via this shell script:
	for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f) $(find include/ -name '*.h' -type f) ; do sed s,media_entity_create_link,media_create_pad_link,g <$i >a && mv a $i; done

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/omap3isp/ispcsi2.c

@@ -1265,7 +1265,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
 		goto error_video;
 
 	/* Connect the CSI2 subdev to the video node. */
-	ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
+	ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
 				       &csi2->video_out.video.entity, 0, 0);
 	if (ret < 0)
 		goto error_link;