ascend inclusion
category: bugfix
bugzilla: NA
CVE: NA

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

There is a bug in dvpp. The virtual address used by dvpp must
have same higt 16bits.

Add a MAP_VA32BIT for mmap. mmap(..., MAP_VA32BIT) will return
the virtual address with same higt 16bits.
Signed-off-by: NJiankang Chen <chenjiankang1@huawei.com>
Signed-off-by: NZhou Guanghui <zhouguanghui1@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>