[Patch] MIPS: Fix -march=native.

[David Daney]

A new feature of GCC for 4.4 is that the mips port now support 
-march=native (and -mcpu=native).  Unfortunately it was broken for 64 
bit targets by this patch:

http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00334.html

The fix is to add LINUX_DRIVER_SELF_SPECS to the DRIVER_SELF_SPECS 
definition in linux64.h as was done for linux.h.

Tested on mips64-linux-gnu with --with-arch=native (and --with-float=soft).


OK to commit?

2008-12-01  David Daney  <ddaney@caviumnetworks.com>
	    Adam Nemet  <anemet@caviumnetworks.com>

	* config/mips/linux64.h (DRIVER_SELF_SPECS): Add
	LINUX_DRIVER_SELF_SPECS.
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