media: v4l: fwnode: Fix comment incorrectly mentioning v4l2_fwnode_parse_endpoint

It's called v4l2_fwnode_endpoint_parse, not v4l2_fwnode_parse_endpoint.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>