ARM: clps711x: edb7211: Remove extra iotable_init() call

The keyboard driver for the CLPS711X platform is missing, so there
is no need to call iotable_init() for this memory region.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>