d2 et al.: disable OABI compat

Commit fefc65c201fc50bd4f22602292bbf48c8df23450 removed the requirement
for OABI compatibility back in April due to TLB crashes, but we still
have it on.

There is no reason I can think of to leave this on.

Change-Id: Idec3a3f4a931db601ad469e892b30eb18be4deed