[oe] MIPS machine.confs

[Koen Kooi]

Henning Heinold wrote:
> Hi,
>
> there are serval .conf under machine/ (rb500.conf,wrt54,wl500g.conf)
> which using TARGET_CC_ARCH = "-Os". I suggest this should be not set
> there, becaue it's a distribution-thingie. If no one minds I will clean it up.

I certainly don't mind, it a thing I missed in my previous machine/tune 
cleanup :)

regards,

Koen