[Patch, microblaze]: Add config/microblaze.mt for target_makefile_frag

[Michael Eager]

On 07/26/13 07:58, David Holsgrove wrote:
> Mirror MIPS method of creating copy of default.mt which drops the
> compilation of generic sbrk.c to instead continue using the microblaze
> provided version.

I'll apply this and let you know if it corrects the gcc regressions.


-- 
Michael Eager	 eager@eagercon.com
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