Update LOG_TAG and setAmplitudeCached timeout

To support the force-feedback vibrator, the type of ff_replay length
is __u16 (i.e. 65535). 6000000 is out of the bound.

Reference: Kernel header file include/uapi/linux/input.h
Bug: 279134938
Test: atest \
  libvibratorservice_benchmarks:VibratorBench/setAmplitudeCached
Change-Id: I59d7776c1a24f0695bd7ce06d334a07b7d3ecf72