msm: ipa: enable suspend pipe for ODU

For ODU bridge use case ODU CONS pipe should be suspend
if there is no data activity to make sure IPA clocks will be
voted on downlink traffic

Change-Id: I6625eb082d55456e0f71afa8fc6ebdba3f6024a5
CRs-Fixed: 1095287
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>