hw/pci-host/bonito: Better describe the I/O CS regions

Better describe the I/O CS regions, add the ROMCS region.

Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Message-id: <20200510210128.18343-11-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
1 file changed