platform NAND driver: add driver

This patch adds support for generic platform NAND driver. Updated after tglx's review/discussion in IRC #mtd channel.

drivers/mtd/nand/Kconfig     |    9 ++
drivers/mtd/nand/Makefile    |    1
drivers/mtd/nand/plat_nand.c |  150 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 160 insertions(+)

Index: linux-2.6/drivers/mtd/nand/Kconfig
===================================================================
@@ -270,4 +270,13 @@ config MTD_NAND_NANDSIM

The simulator may simulate various NAND flash chips for the MTD nand layer.

+config MTD_NAND_PLATFORM
+ tristate "Support for generic platform NAND driver"
+ depends on MTD_NAND
+ help

+	  This implements a generic NAND driver for on-SOC platform
+	  devices. You will need to provide platform-specific functions
+	  via platform_data.

+
+
endif # MTD_NAND

Index: linux-2.6/drivers/mtd/nand/Makefile
===================================================================
@@ -26,6 +26,7 @@ obj-$(CONFIG_MTD_NAND_NDFC)		+= ndfc.o

obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o
obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
+obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o

nand-objs := nand_base.o nand_bbt.o
cafe_nand-objs := cafe.o cafe_ecc.o