sysbus: Remove sysbus_add_memory and sysbus_del_memory

sysbus: Remove sysbus_add_memory and sysbus_del_memory

Remove the sysbus_add_memory and sysbus_del_memory functions. These
are trivial wrappers for mapping a memory region into the system
memory space, and have no users now.  Sysbus devices should never map
their own memory regions anyway; the correct API for mapping an mmio
region is for the creator of the device to use sysbus_mmio_map.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1363358063-23973-6-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>