arm: mach-kirkwood: add led in sheevaplug-setup.c

This patch adds a second, red, led for the standard sheevaplug.
The sheeva_esata mpp config is left unchanged.

Tested on a standard sheevaplug

Signed-off-by: Robin Becker <robin@reportlab.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>