[media] v4l: omap4iss: use snprintf() to make smatch happy

Smatch complains here because name is a 32 character buffer and we
adding the "OMAP4 ISS " prefix as well for a total of 42 characters.
The sd->name buffer can only hold 32 characters. I've changed it to use
snprintf() to silence the overflow warning.

Also I have removed the call to strlcpy() which is a no-op.

Signed-off-by: Dan Carpenter <[e-mail]>
Signed-off-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/staging/media/omap4iss/iss_csi2.c

···
 	v4l2_subdev_init(sd, &csi2_ops);
 	sd->internal_ops = &csi2_internal_ops;
 	sprintf(name, "CSI2%s", subname);
-	strlcpy(sd->name, "", sizeof(sd->name));
-	sprintf(sd->name, "OMAP4 ISS %s", name);
+	snprintf(sd->name, sizeof(sd->name), "OMAP4 ISS %s", name);
 
 	sd->grp_id = 1 << 16;	/* group ID for iss subdevs */
 	v4l2_set_subdevdata(sd, csi2);