arm64/ascend: Enable CONFIG_ASCEND_DVPP_MMAP

ascend inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4M24Q


CVE: NA

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Enable CONFIG_ASCEND_DVPP_MMAP by default y.

Signed-off-by: Lijun Fang <fanglijun3@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>