Use common board file and support SATA interface additionally. Specify the dtb file for i.MX6 build. Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Milo Kim <woogyom.kim@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>