mm/sharepool: Introduce SPG_NON_DVPP flag for sp_group_add_task

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5EORS


CVE: NA

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When SPG_NOD_DVPP is specified to sp_group_add_task, we don't create a
DVPP mapping for the newly created sp_group. And the new group cannot
support allocating DVPP memory.

Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>