msm: ipa: allow WDI TX data path without IPA RM

Suspend on WDI TX path is currently removed by IPA RM only. This
commit enables use cases where IPA RM is either disabled or not
in use from client side.

Change-Id: I29083eae63a59fa4825cbeeb4ddb68bcab102fef
Signed-off-by: Ravi Gummadidala <rgummadi@codeaurora.org>