sw64: remap PA with |= in early_ioremap

Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I56OLG



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BIOS passes logical address as physical address, which starts with
PAGE_OFFSET. It will overflow if add PAGE_OFFSET again.

Signed-off-by: Zhao Yihan <zhaoyihan@wxiat.com>

Signed-off-by: Gu Zitao <guzitao@wxiat.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>