[PATCH 0/1] Fix OOB checking problem in nand_base.c

[Stanley.Miao]

on TI OMAPL138 EVM board, the NAND Flash have 22 bytes free in OOB area.
When yaffs2 writes the 28-byte tags into NAND OOB area, the NAND subsystem
doesn't give any WARNING or ERROR.

Move the checking of validity of oob data from nand_do_write_oob into
nand_write_oob to fix this problem.