Revert "usb: xhci-msm-hsic: Reset transfer ring upon bus suspend"

This reverts commit 0a84e4a6.

General instability has been seen as a result of the above change.
Temporarily revert it until these issues are resolved.

Change-Id: I30f1457839da6bde04ea77a6a845345989985a37
Signed-off-by: Bruce Levy <blevy@codeaurora.org>