ARCH: imx: Call sata_remove() not on imx6 duallite/solo boards

For a single binary approach for imx6 quad/dual/duallite/solo it
is necessary to enable CONFIG_SATA for quad/dual. On the other hand
on imx6 duallite/sole SATA is not available.
Therefore sata_remove() is skipped according to a blacklist scheme.

Adding further imx derivates is probably not recessary as they are
usually not pin-compatible and therefore a different board with its
own configuration.

Signed-off-by: Ludwig Zenz <lzenz@dh-electronics.com>