soc: kunpeng_hccs: fix some sparse warnings about incorrect type

This patch fixes some sparse warnings about incorrect type.
The address about PCC communication space should use '__iomem' tag.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308151142.dH5Muhva-lkp@intel.com/


Fixes: 886bdf9c ("soc: hisilicon: Support HCCS driver on Kunpeng SoC")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://lore.kernel.org/r/20230816073706.33297-1-lihuisong@huawei.com


Signed-off-by: Arnd Bergmann <arnd@arndb.de>