Fix pata imx resource

Commit 236c4e8b
"ARM: imx: Add PATA resources for other i.MX processors"
has broken resource declaration of pata_imx device by using iobase instead of
iosize.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>