I had this exact thing done on my Canyon Star. Newmar cut a hole in the wall. On the backside (just above the toilet) they installed an access door to reach all the cable hook-ups. On the front wall, they built a recessed frame that the TV fits into. A bracket was constructed out of angle iron and the TV was bolted to it. It works well, plenty of room between the TV and slide, and the arrangement is much better for viewing than over the windshield.
2011 Newmar Canyon Star 3411; Workhorse W22; 8.1L; Allison 6-speed
2013 Honda CRV