soc: qcom: sleepstate: Move delay to suspend path

The previous change removed the delay from the suspend path and reduced
the delay on the resume path. The correct heuristic should be the
opposite. Remove the delay from resume and have a short delay on the
suspend path.

Change-Id: I5e778e10ae9338f9f7ff35cf4be006e3470f32d6
Signed-off-by: Chris Lew <clew@codeaurora.org>