The profile for the Tokina 11-16mm was added in Camera Raw 8.7/LR 5.7. As long as you have at least one of these versions of the plugin/app and are shooting RAW, you should be able to find this profile either automatically or by selecting Tokina from the lens Make menu. The profile will not work with JPEG images.
It does not appear that we have a profile for the Canon EF-S 18-55mm f3.5-5.6 II lens. I'm checking on whether we have that lens in our inventory to confirm this.
Would you be able to post a link to a sample image from the Canon EF-S 18-55mm f3.5-5.6 II?
Another option would be to install the free Adobe Lens Profile Downloader from the following page. It's possible that another user has already generated a profile that yo can use for either lens.