msm: kgsl: Change GPU Fast Hang detection to 50ms

Fast hang detection algorithm is improved to use additional
performance counters to monitor shader processor activity.
Shader processor's active alu cycles, icl0 misses
and fs cflow instructions are added to list of activities
monitored for fast hang detection.

Change-Id: Ie74b2ca2d8eb587dbdae40f8fafd901e71f50ddb
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>