mipsisa32-unknown-elf-as: Error: too large constant

[Fred Fish]

Wow, looks like I stirred a hornets nest.  :-)

> well, one would hope this would be something like: "or $2, $2,
> KSEG0_BASE" or something.  (That's what it was like in some of our
> source, and yes, we had to ... change the #define.)

FYI, the problem showed up in redboot, with the expansion of something
like:

	CYGARC_ADDRESS_REG_CACHED(k0)

-Fred