[ARM] pxa/cm-x2xx: fix ucb1400 not being registered

This patch fixes cm-x2xx not registering the ucb1400. This is
because of the splitting of ucb1400 driver half year ago.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>