hw/tpci200: Fix compiler warning (redefined symbol with MinGW)

STATUS_TIMEOUT is defined in winnt.h:

  CC    hw/tpci200.o
hw/tpci200.c:34:0:
 warning: "STATUS_TIMEOUT" redefined [enabled by default]
/usr/lib/gcc/x86_64-w64-mingw32/4.6/../../../../x86_64-w64-mingw32/include/winnt.h:1036:0:
 note: this is the location of the previous definition

Use STATUS_TIME instead of STATUS_TIMEOUT as suggested by Alberto Garcia.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>