ARM: mxs: add GPMI-NAND support for imx23/imx28

add GPMI-NAND support for imx23 and imx28.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
8 files changed