msm: IPA: mhi_proxy: correct the mhi vote for both bus and device

There is a recent MHI API change to add flexibility to do either
bus and device, but the change were applied to cv2 target
mistakenly and get exposed due to Android Q update.
The fix here is to correct the mhi vote for both bus/device.

Change-Id: I9803d1aeb80952c33503d0fd7adb343a22cf6d4b
Signed-off-by: Bojun Pan <bojunp@codeaurora.org>