omap4: panda: cleanup board files

No new functionality added.

* Lunch will now show panda option (full_panda-userdebug)
* Add file headers for copyrights
* Update kernel bootargs

Change-Id: Ib588a306f387bc6c49d2ad52e2da62aaf2f60d90
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
9 files changed