[PATCH v2] MIPS: Use `.set mips2' to emulate LL/SC for the R5900 too

[Maciej W. Rozycki]

Hi Fredrik,

> It turns out that `.set arch=mips' isn't needed, so the patch can be
> simplified.  Please find the updated v2 patch here.

 FAOD, it was me who suggested that `.set arch=mips2' was required, while 
indeed existing `.set mips2' is just as good and does not have to be 
changed.

 For some reason I misremembered that with GAS `.set mipsX' only overrides 
the ISA level used for assembly and leaves the original CPU architecture 
intact, while indeed both `.set mipsX' and `.set arch=mipsX' override both 
settings and are equivalent to each other.  Sorry to cause this confusion.

 This version is:

Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>

  Maciej