imx: Use SATA instead of CMD_SATA

This causes a build failure on mx6cuboxi with split config, since CMD_SATA
shows up as enabled in SPl (because there is no SPL_CMD_SATA).

The condition is wrong anyway, so change it to use SATA instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
1 file changed