[Patch] More thorough cpu.h hardware struct

[Ben Elliston]

   The -gen-hardware-struct thingie already filters hw objects for
   hw-need-storage?-ness, so it's redundant to do it in the caller too.

Ah yes.

   Also, I would push the conditional down a few layers, since the two
   arms share a lot.  Something like:

   [...]

Thanks.  I've made the changes you've suggest and will check in the revised
patch once I have tested it on another port.

   (By the way, untabified text survives email editing better.)

Stupid X cut and paste.  Sorry.

Ben