generic: fold yaffs_cvs_2009_04_24 patch to generic/files

target/linux/generic/files/fs/yaffs2/Kconfig

target/linux/generic/files/fs/yaffs2/Makefile

target/linux/generic/files/fs/yaffs2/NOTE.openwrt

target/linux/generic/files/fs/yaffs2/devextras.h

target/linux/generic/files/fs/yaffs2/moduleconfig.h

target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c

target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h

target/linux/generic/files/fs/yaffs2/yaffs_ecc.c

target/linux/generic/files/fs/yaffs2/yaffs_ecc.h

target/linux/generic/files/fs/yaffs2/yaffs_fs.c

target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h

target/linux/generic/files/fs/yaffs2/yaffs_guts.c

target/linux/generic/files/fs/yaffs2/yaffs_guts.h

target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c

target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h

target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c

target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h

target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c

target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h

target/linux/generic/files/fs/yaffs2/yaffs_nand.c