input: qcom-hv-haptics: reset FIFO play logic when hBoost is busy

Currently, when waiting for hBoost ready times out, error code -EBUSY is
returned. In addition to that, reset the FIFO play logic so that the
following FIFO requests can still be served.

Meanwhile, add 100us before updating HAPTICS_EN for hBoost to have
enough time to handle its power transition as per the hardware
recommendation.

Change-Id: Iebfc98b589bda747e4c2b6fdf6ff78d2f46ece5d
Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com>