gpu/msm: adreno_sysfs: Disable KGSL throttling and make it RO

Squeeze a bit more performance by disabling throttling
on KGSL.

Test
[3dmark] - Wild Life Stress Test
  |
  |- Before: 462
  |- After: xxxx

Change-Id: I05daec9f5e22b0dd715eafd5c749197f3b0e32f5
Signed-off-by: Panchajanya1999 <panchajanya@azure-dev.live>
Signed-off-by: Forenche <prahul2003@gmail.com>
Signed-off-by: HafizZiq <hafizuddinismail552@gmail.com>
Signed-off-by: fajar <santuyz321@gmail.com>
Signed-off-by: negrroo <mohammedaelnaggar1@gmail.com>