Eliminate PARAMS in include/opcode/cgen.h

[Doug Evans]

Michael Meissner writes:
 > This patch eliminates PARAMS from include/opcode/cgen.h.

Thanks.  I should have said this needs to be forwarded to the
binutils list for approval.  Sorry!

 > Note, I waiting for an answer from the copyright clerk so I don't yet have a
 > valid copyright disclaimer on file at the FSF for bfd/binutils.  I suspect this
 > can't be applied until all of the paperwork is in place.

IMO it can go in right away.
The change isn't of the kind requires a copyright,
regardless of the number of PARAMS removed.
But that's for Nick to decide.