msm: ipa: Update ep info for auto use case on ipav4.0

For Auto use case we need an additional pair of
USB and MHI end points.
Update ipa driver's ep_mapping accordingly to
support auto use case by reading device node
from device tree.

Change-Id: If4e73c1f6793d8ee89f76518a2da28257381fe34
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>