arm64: defconfig: Enable HISILICON_LPC

Now that the driver has been merged for the HiSilicon
LPC host, enable the relevant config.

Turning on this config will also enable config
INDIRECT_PIO, which would have not been enabled
previously - see config info for more details.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>