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

[will schmidt]

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, 
and one of the bytes containing size-of-string has a high-bit set.
Second, it corrects a bit of bad math when determining the size of the 
string coming back from the get-system-parameter hcall.

Signed-off-by: Will Schmidt <willschm at us.ibm.com>


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