This patch avoids recursive crash (leading to kernel stack overflow) in
die() on CHRP/PReP machines when CONFIG_PMAC_BACKLIGHT=y.
set_backlight_* functions are placed in pmac section, which is discarded
when _machine != _MACH_Pmac.

Should apply to latest 2.4.x and 2.6.x as well.


-- 
Jakub Bogusz    http://cyber.cs.net.pl/~qboosh/