Nand mxc_nand add v1.1 controller support

Nand mxc_nand add v1.1 controller support

Add support for version 1.1 of the nfc nand flash
controller which is on the i.mx25 soc.

Use CONFIG_NAND_MXC_V1 and CONFIG_NAND_MXC_V1_1 to
differentiate between the two supported versions.

Add a define CONFIG_NAND_MXC_V1 to imx27lite board config.

Also factor out some soc specific nand geometry config
into a new inline routine and a couple of defines:
    mxc_get_nfc_info
    IMX_NFC_IS_16BIT
    IMX_NFC_IS_2KPAGE

Added to imx-regs.h.

Signed-off-by: John Rigby <jcrigby@gmail.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>