[U-Boot] Add WATCHDOG_REFRESH() inside nand write and read

[Scott Wood]

On Wed, Jun 17, 2009 at 08:13:38PM +0200, Giulio Benetti wrote:
> Add WATCHDOG_REFRESH() inside nand write and read
> 

Please send patches inline, not as attachments.  Attachments are harder
to feed into git, and in some e-mail clients are harder to quote in
replies.

Also, this should probably go in the inner loops of the NAND drivers,
rather than just at the beginning of a command that could be long-running.

-Scott