mips: baudbase is 115200 by default

(The default value is set for TYPE_SERIAL in serial_properties)
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAleksandar Markovic <amarkovic@wavecomp.com>

hw/mips/mips_mipssim.c

@@ -223,7 +223,6 @@ mips_mipssim_init(MachineState *machine)
     if (serial_hd(0)) {
         DeviceState *dev = qdev_create(NULL, TYPE_SERIAL_IO);
 
-        qdev_prop_set_uint32(dev, "baudbase", 115200);
         qdev_prop_set_chr(dev, "chardev", serial_hd(0));
         qdev_set_legacy_instance_id(dev, 0x3f8, 2);
         qdev_init_nofail(dev);