msm: kgsl: Remove non-critical error messages

Stop the kernel from spamming error messages on non-kernel errors.
Remove the error messages that are coming from the user space passing
invalid parameters to the kgsl ioctls.

Change-Id: Iea9646da1d3a92ebaffd6c4449130c069d61021d
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>