[PATCH] ppc64: fix lparcfg datatype and bad math.

[Paul Mackerras]

will schmidt writes:

> This patch fixes two problems with the string parsing code out of lparcfg.
> First, it changes the data type of a char array to be unsigned.  This 
> prevents some nasty behavior when the code is built with -fsigned-char, 

OK, making it explicitly unsigned char is good, but why would we ever
build the kernel with -fsigned-char?

Paul.