msm:ipa: stop the UL MHIP channels after probe

This change is to stop uplink MHIP IPA tethering channels if
there is no active tethering use case.

Change-Id: I93fb5fb9b6b83c4a7c8cdc2b7ab8b1c1ff9ff7fb
Acked-by: Jyothij <jyothij@qti.qualcomm.com>
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>