m68k: cache fpu result

[Nat Sloss <nathanialsloss%yahoo.com.au@localhost>]

I like to add the following patch which does two things:

1) Add nop before fnop in fpu_probe() for buggy lc040 compatability

2) Caches the fpu result so the probe is only run once (in theory should make 
the code a little faster)

http://ftp.netbsd.org/pub/NetBSD/misc/nat/m68k-fpu.c.diff

Best regards,

Nat