msm: IPA: uC debug stats correction for USB pipes

There are multiple places to call gsi_channel_start for USB pipe,
the fix here is to correction the stats monitor logic on suspend
/resume and other unhandled scenarios.

Change-Id: I17986b15e0a8577805d533068b576a213d766b60
Signed-off-by: Bojun Pan <bojunp@codeaurora.org>