msm: wfd: Restart hrtimer after forwarding it

Calling hrtimer_forward_now() outside of the hrtimer callback context
and not restarting it seems to be a misuse of the hrt APIs.

Change-Id: Ia8e82a6ad327acddc135835268a755e3646d2ee8
Signed-off-by: Deva Ramasubramanian <dramasub@codeaurora.org>