PVR/SGX: fixes for procfs

http://git.goldelico.com/?p=gta04-kernel.git;a=commit;h=4f45154faf885cd4441410ed11fda0353f3f95eb

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>