The default with linux-user for dcbz on 970 is to emulate 32 byte clears.
However, redoing the dcbzl support we added a check to not honor the bit
in HID5 that sets this.

Remove the #ifdef check on linux user, so that we get 32 byte clears again.
Reported-by: NRiku Voipio <riku.voipio@iki.fi>
Signed-off-by: NAlexander Graf <agraf@suse.de>