[PATCH] enable DEBUG via config option

[Paul Mackerras]

Olaf Hering writes:

> Its always boring to edit each file and turn the #undef DEBUG into
> #define DEBUG. This patch makes it a simple config option.
> Now the question is, how verbose will the boot be when all the printk
> are enabled? appears to be ok so far on a p620.

Having it as a config option seems to be of use only to a few kernel
developers.  Why don't you just edit the Makefile and add -DDEBUG to
the CFLAGS when you want to do that?

Paul.