msm: kgsl: Change throttling counter weight from 15% to 5%

Change weights for throttling counters from (15%, 50%, 90%)
to (5%, 50%, 90%) for GMU FW step version > 0x104.

Change-Id: Ia98303dc894ac07e285e8145923d6ad1c152b3cf
Signed-off-by: Sushmita Susheelendra <ssusheel@codeaurora.org>