defconfig: arm64: Enable of_devlink proxy consumer for Lahaina

Enable the proxy consumer drivre for Lahaina platform to satisfy
the sync-state requirements in the abcense of real drivers.

Change-Id: I255aee9c1cf2995ab7038f7c95e45afdd94ef42b
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>