ARM: dts: imx6qdl: SolidRun: move microsom includes into .dts

Move the microsom includes into the .dts files so different options can
be accomodated at the lowest level.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>