Fix for PPC uClibc build

[Mike Frysinger]

On Sunday 05 March 2006 22:56, Brent Cook wrote:
> For the past month or so, the powerpc build of uClibc has been broken for
> me (I have been stuck on 20060113 for a while). Currently, the build dies
> on brk.S on the libc_hidden_data_def(__curbrk) line, apparently because
> __curbrk is not statically initialized.

while i havent been having building troubles, i have been having segv troubles 
with my nightly ppc/uClibc tests ... your patch fixes that

> The attached patch (cribbed from the alpha port) allows uClibc to build
> without errors, but I haven't actually verified if this is correct
> (chrooting on my Mac gives an 'Illegal instruction' error.)

ive committed your proposed changes ... Joakim, please review as i lost our 
irc conversation the other day about this :/
-mike