spl, nand: add option CONFIG_SPL_NAND_IDENT to lookup for supported NAND chips

Add the config option `CONFIG_SPL_NAND_IDENT` for using the NAND chip ID list
to identify the NAND flash in SPL.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
3 files changed