normally that would mean there is no primary bus, but until certain
bugs are fixed we arbitrarily designate a primary in this case.

Conversion to a platform driver and related improvements can happen
after this, as the ordering issues are sorted out.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
ĈMSë