disable gdbserver for cross builds

[Philip Blundell]

Michael Snyder wrote:
>Philip Blundell wrote:
>> 
>> I didn't get any response to my mail of Sep 9 (to the gdb list) on this topic,
>> so I'd like to propose the following patch.
>
>I don't understand the motivation for the patch.
>Gdbserver is currently built only when needed
>(ie. not for cross-debuggers).

I don't believe this is true.  Please try to build a cross GDB targeting 
m68k-linux; it fails for me in the gdbserver directory.

p.