defconfig: sdxlemur: Disable IOSS v1 driver

IPA Offload Sub-System v1 is deprecated now that all ethernet drivers
have moved to v2.

This reverts commit 6d40652a.

Change-Id: Ie56390eda564627cd9f9ccdb64123c656b5d96b6
Signed-off-by: Jinesh K. Jayakumar <jineshk@codeaurora.org>