nand: Merge changes from Linux nand driver

[backport from linux commit 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe]

This patch synchronizes the nand driver with the Linux 3.0 state.

Signed-off-by: Christian Hitz <christian.hitz@aizo.com>
Cc: Scott Wood <scottwood@freescale.com>
[scottwood@freescale.com: minor fixes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
3 files changed