input-cfboost: add trace points

Add trace points to log time stamp when the input event is received
and time at which boost work is scheduled. This is for detailed
profiling of touch latency.

Bug 1229219

Change-Id: I5f2f4f3d821d93b550fa9f86dc8fd562fa5d460a
Signed-off-by: Yogish Kulkarni <yogishk@nvidia.com>
Reviewed-on: http://git-master/r/197954
Reviewed-by: Riham Haidar <rhaidar@nvidia.com>
Tested-by: Riham Haidar <rhaidar@nvidia.com>