xhci: fix issue of cross page boundary in TRB prefetch

zhaoxin inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I40QDN


CVE: NA

----------------------------------------------------------------

On some Zhaoxin platforms, xHCI will prefetch TRB for performance
improvement. However this TRB prefetch mechanism may cross page boundary,
which may access memory not belong to xHCI. In order to fix this issue,
using two pages for TRB allocate and only the first page will be used.

Signed-off-by: LeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>