[PPC64] Remove another fixed address constraint

[Olaf Hering]

 On Mon, Jul 25, David Gibson wrote:

> Presently the LparMap, one of the structures the kernel shares with
> the legacy iSeries hypervisor has a fixed offset address in head.S.
> This patch changes this so the LparMap is a normally initialized
> structure, without fixed address.  This allows us to use macros to
> compute some of the values in the structure, which wasn't previously
> possible because the assembler always uses signed-% which gets the
> wrong answers for the computations in question.
> 
> Unfortunately, a gcc bug means that doing this requires another
> structure (hvReleaseData) to be initialized in asm instead of C, but
> on the whole the result is cleaner than before.

I think this change caused this compile error in rc4:

{standard input}: Assembler messages:
{standard input}:254: Error: value of 4000000000002080 too large for field of 4 bytes at 0000000000002108
make[1]: *** [arch/ppc64/kernel/LparData.o] Error 1

binutils-2.16.91.0.2
gcc-4.0.2_20050727