Fix ducking deactivation retrial logic

Fix ducking deactivation retrial logic

- Issue:
If the ducking deactivation is failed, the retrial for the failure can
be performed after a long period of time.

- Solution:
This patch fixes the logic for the retrial. Through this patch, the code
reset the interval of the timer to zero. The deactivation failure should
be caused by a minor timing issue, so it will only take a short period
of time. So, this patch can make faster the retrial latency.
And also this patch includes some minor coding covention fix.

Change-Id: I540fb25b7bc2c8b3099046d8bca98b267afa95e4
Signed-off-by: Suyeon Hwang <stom.hwang@samsung.com>