soc: qcom: sleepstate: Enable/Disable IPCRTR wakelocks

The acquiring of wakelock prevents the system from entering
suspend for high frequency non-wakeup sensor requests. With
the change IPCRTR now does not acquire a wakelock while cpu
is out of suspend. This allows the cpu to enter suspend.
The wakelocks are enabled in the suspend path so that future
wakeup capable sensor events gets handled without issues.
The wakelocks are disabled post resume from suspend.
This change affects only the data on the SLPI edge.

Change-Id: Iae3dafb735bfb0d3000487f2fa2216d68e9a026f
Signed-off-by: Ramakrishnan Ganesh <ramakris@codeaurora.org>