Fix .sbss problem with objcopy of MIPS prelinked binaries

[Nick Clifton]

Hi Joseph,

> 2009-02-03  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* elfxx-mips.c (_bfd_mips_elf_section_processing): Remove special
> 	.sbss handling.

Approved - please apply - but, please could you add a comment where you 
removed the code explaining to future readers why the .sbss section does 
not have any special handling.

Cheers
   Nick