drivers: mtk-perf: Shut up with the spam

* fpsgo is a proprietary kernel driver (yes, these exist in mtk), this line
  keeps spamming the log, masking what I actually want from the logs

Signed-off-by: Vaisakh Murali <vaisakhmurali@gmail.com>
Change-Id: I9c2c194fe6e3903b5bca080209339338f9224ccc