msm: ipa : teth_bridge: MPDP-MBIM bug fix

Bug fix for MPDP over MBIM software path, where BRIDGE_PROD entity
is not immediately granted by the Resource Manager. In this theoretical
scenario, an MBIM packet may be sent on the wrong USB pipe.

Change-Id: I48e393251a4983a00d123b11c92b9139d4178c45
Acked-by: Yaniv Hasbani <yhasbani@qti.qualcomm.com>
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>