ppc/arm: remove remainders of dead boards in Kconfig

Commit d58a9451e733 (ppc/arm: zap EMK boards) removed
TOP* boards support but missed to remove entries in Kconfig.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
3 files changed