Make the default OSK config more current:
  - Ran through "make oldconfig"
  - Turn off unused clocks
  - Use 32 KHz timer and NO_IDLE_HZ
  - Use normal writeback cache (not writethrough)
  - Reenable NOR flash
  - Enable CF stack, and (modular) IDE + VFAT stack over it
  - Serio?  none of that on this board, disable it!
  - Enable NFS root by default.

I left Audio, DSP and USB host support disabled for now, though
arguably they should all be turned on too.  Ditto other stuff.

CF is turned on since it seems too easy for folk to miss something
important there (can you say non-intuitive?), and NFSroot since it's
likewise easy to miss (and simpler to set up than an initrd).
Signed-off-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>