* FSMC NAND

Required properties:
- compatible : "st,spear600-fsmc-nand", "stericsson,fsmc-nand"
- reg : Address range of the mtd chip
- reg-names: Should contain the reg names "fsmc_regs", "nand_data", "nand_addr" and "nand_cmd"

Optional properties:
- bank-width : Width (in bytes) of the device.  If not present, the width
  defaults to 1 byte
- nand-skip-bbtscan: Indicates the the BBT scanning should be skipped

Example:

	fsmc: flash@d1800000 {
		compatible = "st,spear600-fsmc-nand";
		#address-cells = <1>;
		#size-cells = <1>;
		reg = <0xd1800000 0x1000	/* FSMC Register */
		       0xd2000000 0x0010	/* NAND Base DATA */
		       0xd2020000 0x0010	/* NAND Base ADDR */
		       0xd2010000 0x0010>;	/* NAND Base CMD */
		reg-names = "fsmc_regs", "nand_data", "nand_addr", "nand_cmd";

		bank-width = <1>;
		nand-skip-bbtscan;

		partition@0 {
			...
		};
	};