KGSL: Simple Governor: some styling changes, early returns instead of assigning a val and returning in the end of the function call and change the copyright/author from the middle of the file to the header.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
This is definitely not needed for mako/geeb.
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>