internal/syscall/unix: add randomTrap for m68k

Patch by Andrwas Schwab.

Change-Id: Ib7b3f903e7010dbf8b884c4f9018cb9ecfe6e9c0
Reviewed-on: https://go-review.googlesource.com/38456
Reviewed-by: Ian Lance Taylor <iant@golang.org>
1 file changed