Blackfin: bf54x: re-enable anomaly 05000353 for all revs

Even though the anomaly sheet says that the the bootrom is fixed, tests
have shown that the fix itself does not handle all cases.  So until we
get a ROM update, assume the reset code is still broken and we need to
handle things ourselves.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>